# Physical Sciences Grade 12 P1 NSC November 2022 QP (Eng)

> Grade 12 Physical Sciences Paper 1 question paper from the NSC November Exam 2022 (English), 21 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/physical-sciences-p1-nov-2022-eng/9d977ee2-e9a0-43d1-8d01-201091596404
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 12
- Document type: Question paper
- Year: 2022
- Exam period: NSC November Exam
- Paper: 1
- Curriculum: CAPS
- Pages: 21

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Physical Sciences · Grade 12 · NSC November Exam · 2022. Question paper, 21 pages. Read online or download the PDF.

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### Page 1

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                                  NATIONAL
                             SENIOR CERTIFICATE

                                     GRADE 12

                       PHYSICAL SCIENCES: PHYSICS (P1)

                                  NOVEMBER 2022

MARKS: 150

TIME: 3 hours

              This question paper consists of 18 pages and 3 data sheets.

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Physical Sciences/P1                          2                       DBE/November 2022
                                             NSC

INSTRUCTIONS AND INFORMATION

1.        Write your centre number and examination number in the appropriate spaces
          on the ANSWER BOOK.

2.        This question paper consists of 10 questions. Answer ALL the questions in
          the ANSWER BOOK.

3.        Start EACH question on a NEW page in the ANSWER BOOK.

4.        Number the answers correctly according to the numbering system used in this
          question paper.

5.        Leave ONE line between two subquestions, e.g. between QUESTION 2.1 and
          QUESTION 2.2.

6.        You may use a non-programmable calculator.

7.        You may use appropriate mathematical instruments.

8.        Show ALL formulae and substitutions in ALL calculations.

9.        Round off your FINAL numerical answers to a minimum of TWO decimal
          places.

10.       Give brief motivations, discussions, etc. where required.

11.       You are advised to use the attached DATA SHEETS.

12.       Write neatly and legibly.

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Physical Sciences/P1                             3                        DBE/November 2022
                                                NSC

QUESTION 1: MULTIPLE-CHOICE QUESTIONS

Various options are provided as possible answers to the following questions.
Each question has only ONE correct answer. Choose the answer and write only the
letter (A–D) next to the question numbers (1.1 to 1.10) in the ANSWER BOOK,
e.g. 1.11 E.

1.1       Which ONE of the following combinations consists of only SCALAR
          quantities?

          A     Velocity, speed and time

          B     Time, distance and speed

          C     Acceleration, speed and distance

          D     Displacement, velocity and acceleration                                        (2)

1.2       The acceleration due to gravity on Earth is g.

          Which ONE of the following represents the acceleration due to gravity on a
          planet that has TWICE the mass and HALF the radius of the Earth?

          A      g

          B     2g

          C     4g

          D     8g                                                                             (2)

1.3       A ball is projected vertically upwards from the ground and reaches its
          maximum height after a while.

          Ignore the effects of air friction.

          How will the ACCELERATION and TOTAL MECHANICAL ENERGY of the
          ball at its maximum height compare to that immediately after it was projected?

                       ACCELERATION             TOTAL MECHANICAL ENERGY
          A               Equal to                           Equal to
          B             Greater than                       Smaller than
          C               Equal to                         Greater than
          D             Smaller than                         Equal to                          (2)

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Physical Sciences/P1                            4                           DBE/November 2022
                                               NSC

1.4       A car travels at CONSTANT VELOCITY along a horizontal road. A constant
          frictional force acts on the car during its motion.

          Which ONE of the following statements about the power dissipated by the
          engine of the car during the motion is CORRECT?

          The power …

          A     is zero.

          B     increases.

          C     decreases.

          D     remains constant.                                                                 (2)

1.5       Block X is placed on a horizontal table and is connected to block Y by a light
          inextensible string passing over a frictionless pulley, as shown below.

          A constant frictional force acts on block X while it moves to the right.

          P, Q and R are points on the table such that the distance from P to Q is equal
          to that from Q to R.

                                      X
                                          P    Q       R
                                                                Y

          When block X reaches point Q, the string is cut and block X continues to
          move towards point R. Ignore the effect of air friction.

          Consider the following statements:
          (i)   The work done by the frictional force acting on block X is greater when
                the block moves from point P to point Q than when the block moves from
                point Q to point R.
          (ii) Both the momentum and kinetic energy of block X decrease when the
               block moves from point Q to point R.
          (iii) The total mechanical energy of block X remains constant when the block
                moves from point Q to point R.

          Which of the statements above is/are CORRECT as block X moves from
          point Q to point R?

          A     (i) only

          B     (ii) only

          C     (i) and (ii) only

          D     (ii) and (iii) only                                                               (2)
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Physical Sciences/P1                          5                           DBE/November 2022
                                             NSC

1.6       Light emitted from a distant star contains a spectral line X of frequency f. The
          spectral lines of this star when observed on Earth are red shifted.

          Which ONE of the following combinations of the OBSERVED FREQUENCY
          of spectral line X and the MOTION OF THE STAR is CORRECT?

                     OBSERVED FREQUENCY               MOTION OF THE STAR
           A               Greater than f                 Away from Earth
           B               Greater than f                  Towards Earth
           C               Smaller than f                 Away from Earth
           D               Smaller than f                  Towards Earth                        (2)

1.7       A proton and an electron are a distance r apart. The magnitude of the
          electrostatic force that they exert on each other is F.

          Which ONE of the following graphs shows the relationship between F and r2
          as the proton and the electron approach each other?

          A                                          B
                F                                         F

                     0                                     0
                                    r2                                      r2
          C                                          D
                F                                          F

                     0                                        0
                                    r2                                       r2                 (2)

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Physical Sciences/P1                        6                         DBE/November 2022
                                           NSC

1.8       The emf of a battery is Ɛ and its internal resistance is r. The battery is
          connected to three resistors and four voltmeters, as shown below. The
          resistance of the conducting wires is negligible, while the voltmeters have
          very high resistances.

                                                   V1
                                      S       Ɛ
                                                        r

                                                   V3
                       V2       R1
                                                  R2

                                                  R3

                                                  V4

          Which ONE of the following equations represents the reading on voltmeter V1
          in terms of the readings on the other voltmeters?

          A     V1 = V2 + V 3

          B     V1 = V2 + V3

          C     V1 = V2 + V 3 + V 4

          D     V1 = V2 + 2V3                                                              (2)

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Physical Sciences/P1                                     7                         DBE/November 2022
                                                        NSC

1.9       An AC generator consists of a coil which is rotated in a magnetic field. The
          emf time graph for one complete rotation of the coil is shown below.

                                              150

                                    emf (V)
                                                              0,2
                                                    0
                                                                        time (s)

          If the speed of rotation of the coil is now DOUBLED, which ONE of the
          following graphs is CORRECT for one complete rotation of the coil?

          A                                                   B
                                                                     300

                        150

              emf (V)                                             emf (V)
                                              0,2                                             0,2
                          0                                                 0
                                                time (s)                                            time (s)

          C                                                   D
                        300

                                                                       150

              emf (V)                                             emf (V)
                              0,1                                                  0,1
                          0                                                 0
                                                time (s)                                            time (s)

                                                                                                               (2)

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Physical Sciences/P1                             8                       DBE/November 2022
                                                NSC

1.10      White light is passed through a cold gas and then through a prism, as shown
          below. A line spectrum is observed on the screen.

               White light                Cold gas          Prism              Screen

          Which ONE of the following correctly describes the ENERGY TRANSITION of
          the atoms of the gas and the TYPE OF LINE SPECTRUM observed on the
          screen?

                       ENERGY TRANSITION              TYPE OF LINE SPECTRUM
           A         Higher to lower energy level            Emission
           B         Lower to higher energy level            Emission
           C         Higher to lower energy level           Absorption
           D         Lower to higher energy level           Absorption                        (2)
                                                                                              [20]

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Physical Sciences/P1                                9                  DBE/November 2022
                                                   NSC

QUESTION 2 (Start on a new page.)

Crate P of mass 1,25 kg is connected to another crate, Q, of mass 2 kg by a light
inextensible string. The two crates are placed on a rough horizontal surface. A
constant force F of magnitude 7,5 N, acting at angle  to the horizontal, is applied on
crate Q, as shown in the diagram below.

The crates accelerate at 0, m∙s-2 to the right.

                                                                             F = 7,5 N

                                         string           Q
                               P                                  θ
                                                         2 kg
                            1,25 kg

Crate P experiences a constant frictional force of 1,8 N and crate Q experiences a
constant frictional force of 2,2 N.

2.1       State Newton's Second Law of Motion in words.                                      (2)

2.2       Draw a labelled free-body diagram for crate P.                                     (4)

2.3       Calculate the magnitude of:

          2.3.1        The tension in the string                                             (4)

          2.3.2        Angle θ                                                               (3)
                                                                                             [13]

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Physical Sciences/P1                              10                         DBE/November 2022
                                                 NSC

QUESTION 3 (Start on a new page.)

A ball is thrown vertically upwards from the top of a building of height 25 m with a
velocity of    m∙s-1. On its way down, the ball passes a door which has a height of
1,9 m and then strikes the ground, as shown in the diagram below.

Ignore the effects of air friction.

                                                 m∙s-1

                           25 m

                                         1,9 m     door
                                          m
                                                                    ground

3.1       Define the term free fall.                                                              (2)

3.2       Calculate the:

          3.2.1        Time taken for the ball to reach its maximum height                        (3)

          3.2.2        Velocity with which the ball strikes the ground                            (4)

          3.2.3        Time it took the ball to move from the top of the door to the ground       (4)

3.3       Draw a velocity versus time graph for the motion of the ball from the moment
          that the ball is thrown upwards until it strikes the ground. Use the ground as
          zero reference.

          Clearly indicate the following on your graph:

              The velocity with which the ball was thrown upwards
              Time taken by the ball to reach its maximum height
              The velocity with which the ball strikes the ground                                (3)
                                                                                                  [16]

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Physical Sciences/P1                                           11                           DBE/November 2022
                                                              NSC

QUESTION 4 (Start on a new page.)

Trolley X of mass 1,2 kg travels at 8 m∙s-1 east and collides with trolley Y of mass
0,5 kg which is initially at rest.

Ignore all frictional effects.

The velocity-time graph below shows the velocity of trolley X before, during and after
the collision with trolley Y.

                                    VELOCITY-TIME GRAPH FOR TROLLEY X

            Velocity (m∙s-1)
                               8

                               4

                               0
                                   20             20,1                20,2
                                                           Time (s)

4.1       State the principle of conservation of linear momentum.                                                (2)

4.2       Calculate the magnitude of the:

          4.2.1                     Velocity of trolley Y immediately after the collision                        (4)

          4.2.2                     Average net force that trolley X exerts on trolley Y during the
                                    collision                                                                    (3)

4.3       Is the collision ELASTIC or INELASTIC?

          Explain the answer by means of suitable calculations.                                                  (5)
                                                                                                                 [14]

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Physical Sciences/P1                             12                     DBE/November 2022
                                                NSC

QUESTION 5 (Start on a new page.)

A 12 kg block is initially at rest at point A at the bottom of a ROUGH inclined plane.
The block is pulled up the incline by a constant force F acting parallel to the incline.
The block reaches point B, which is at a vertical height of 4,5 m above the horizontal,
with a speed of 2,25 m·s-1. See the diagram below.

                                          B
                                   F

                       12 kg
                                        4,5 m

       A

5.1        Define the term non-conservative force.                                             (2)

5.2        Draw a labelled free-body diagram for the block when it is pulled up the
           inclined plane.                                                                     (4)

5.3        Calculate the total work done on the block by the NON-CONSERVATIVE
           forces when the block moved from point A to point B.                                (4)

The same constant force F now moves the block at a CONSTANT VELOCITY across a
rough horizontal surface from point B to point C, as shown below. Force F acts parallel
to the horizontal surface.

                                                12 kg        F
                                          B                             C

                                        4,5 m

       A

The magnitude of the constant frictional force acting on the block while moving from
point B to point C is 42 N LARGER than the magnitude of the constant frictional force
acting on the block when it moves from point A to point B.

5.4        Calculate the distance from point A to point B.                                     (5)
                                                                                               [15]

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Physical Sciences/P1                          13                         DBE/November 2022
                                             NSC

QUESTION 6 (Start on a new page.)

A learner investigates the relationship between the observed frequency and the
frequency of sound waves emitted by a stationary source.

The learner moves towards the source at a constant velocity and records the observed
frequency (fL) for a given source frequency (fS) . This process is repeated for different
frequencies of the source, with the learner moving at the same constant velocity each
time.

The graph below shows how the observed frequency changes as the frequency of
sound waves emitted by the source changes.

                        fL (Hz)

                                  0
                                            fS (Hz)

6.1       Name the phenomenon illustrated by the graph.                                        (1)

6.2       Name ONE application in the medical field of the phenomenon in
          QUESTION 6.1.                                                                        (1)

6.3       Write down the type of proportionality that exists between fL and fS, as
          illustrated by the graph.                                                            (1)

6.4       The gradient of the graph obtained is found to be 1,06.

          If the speed of sound in air is 340 m·s-1, calculate the magnitude of the
          velocity at which the learner approaches the source.                                 (5)

The investigation is now repeated with the learner moving at a HIGHER constant
velocity towards the sound source.

6.5       Copy the graph above in your ANSWER BOOK and label it as A. On the
          same set of axes, sketch the graph that will be obtained when the learner is
          moving at the HIGHER velocity. Label this graph as B.                                (2)
                                                                                               [10]

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Physical Sciences/P1                                 14                DBE/November 2022
                                                    NSC

QUESTION 7 (Start on a new page.)

A charged sphere M is suspended from a ceiling by a light inextensible, insulated
string.

Another charged sphere N, of mass 2,04 x 10-3 kg and carrying a charge of
+ 8,6 x 10-8 C, hangs STATIONARY vertically below sphere M. The centres of the
spheres are 0,3 m apart, as shown in the diagram below.

                                                                       ceiling

                                            M
                                                          0,3 m

                                            N

7.1       State Coulomb's law in words.                                                        (2)

7.2       State whether the charge on sphere M is POSITIVE or NEGATIVE.                        (1)

7.3       Draw a labelled free-body diagram for sphere N.                                      (2)

7.4       Calculate the magnitude of the charge on sphere M.                                   (5)

7.5       How does the electrostatic force that sphere M exerts on sphere N compare to
          that exerted by sphere N on sphere M with respect to:

          7.5.1        Magnitude                                                               (1)

          7.5.2        Direction                                                               (1)

Point X is 0,1 m vertically below the centre of sphere N, as shown below.

                                                                         ceiling

                                                M
                                                           0,3 m

                                                N
                                                           0,1 m
                                                X

7.6       Calculate the net electric field at point X.                                         (5)
                                                                                               [17]

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Physical Sciences/P1                              15                             DBE/November 2022
                                                 NSC

QUESTION 8 (Start on a new page.)

The circuit diagram below shows four resistors connected to a battery of emf Ɛ and
internal resistance r. The resistances of the ammeter and the connecting wires are
negligible, while the voltmeters have very high resistances.

                                                    3,5 A
                                                       A

                                             S                 Ɛ

                  V2
                         3Ω               1Ω                              V1
                                                                   r

                                 2Ω                    4Ω

8.1       State Ohm's law in words.                                                                   (2)

Switch S is CLOSED.

8.2       The reading on the ammeter is 3,5 A.

          8.2.1        Calculate the total external resistance of the circuit.                        (4)

          8.2.2        Calculate the reading on voltmeter V1.                                         (3)

          8.2.3        How does the reading on voltmeter V2 compare to the reading on
                       voltmeter V1? Choose from SMALLER THAN, EQUAL TO or
                       GREATER THAN.                                                                  (1)

8.3       A learner concludes that the emf of the battery is equal to the reading on
          voltmeter V1.

          8.3.1        Define the term emf.                                                           (2)

          8.3.2        Is the learner's conclusion CORRECT? Choose from YES or NO.                    (1)

          8.3.3        Give a reason for the answer to QUESTION 8.3.2.                                (1)

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Physical Sciences/P1                            16                        DBE/November 2022
                                               NSC

Switch S is now removed and replaced by voltmeter V2, as shown in the circuit
diagram below.

                                                        A

                                              V2                  Ɛ

                              3Ω             1Ω                           V1
                                                                      r

                                      2Ω                4Ω

8.4       How will EACH of the following change?

          (Choose from INCREASES, DECREASES or REMAINS THE SAME.)

          8.4.1        The power dissipated by the 4 Ω resistor                                (1)

          8.4.2        The reading on voltmeter V1                                             (1)

8.5       Explain the answer to QUESTION 8.4.2.                                                (4)
                                                                                               [20]

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Physical Sciences/P1                            17                         DBE/November 2022
                                               NSC

QUESTION 9 (Start on a new page.)

9.1       The diagram below shows the initial position of the coil in a simple
          DC generator. The coil is rotated in an anticlockwise direction, as shown.

                                           Direction of rotation

                                                     Y
                                               X
                                  N                            S

          9.1.1        Name the component in this generator that ensures that the
                       induced current in the external circuit is in one direction only.         (1)

          9.1.2        Is the direction of the induced current from X to Y or
                       from Y to X?                                                              (1)

          A maximum voltage of 90 V is generated when the coil is rotating at a
          frequency of 20 Hz.

          9.1.3        Write down the time taken for the coil to complete ONE rotation.          (1)

          9.1.4        The coil starts rotating from the initial position, as shown in the
                       diagram above.

                       Sketch a graph of output voltage versus time for one complete
                       rotation of the coil. Indicate the maximum voltage and the relevant
                       time values on the graph.                                                 (4)

9.2       Wall sockets supply rms voltage and current.

          A 220 V AC voltage is supplied from a wall socket to an electric kettle having
          a resistance of 32 Ω.

          Calculate the average energy dissipated by the kettle in TWO minutes.                  (4)
                                                                                                 [11]

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Physical Sciences/P1                         18                        DBE/November 2022
                                            NSC

QUESTION 10 (Start on a new page.)

Light is incident on the cathode of a photoelectric cell connected to a battery and a
sensitive ammeter, as shown below.

                                                  Light incident on
                                                  cathode

                                                           A

10.1      What conclusive evidence about the nature of light is provided by the
          photoelectric effect?                                                            (1)

The cathode has a work function of 3,42 x 10-19 J.

10.2      Define the term work function.                                                   (2)

Light of frequency 5,96 x 1014 Hz is shone onto the cathode.

10.3      Calculate the maximum kinetic energy of an electron ejected from the             (4)
          cathode.

10.4      The ammeter registers a constant current of 0,012 A.

          Calculate the minimum number of photons of light that strike the cathode in a
          10 s period.                                                                     (4)

10.5      The intensity of the incident light is now INCREASED. How will this change
          affect the reading on the ammeter?

          Choose from INCREASES, DECREASES or REMAINS THE SAME.
          Explain the answer.                                                              (3)
                                                                                           [14]

                                                                              TOTAL:       150

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Physical Sciences/P1                     1                     DBE/November 2022
                                        NSC

                        DATA FOR PHYSICAL SCIENCES GRADE 12
                                  PAPER 1 (PHYSICS)

                     GEGEWENS VIR FISIESE WETENSKAPPE GRAAD 12
                                VRAESTEL 1 (FISIKA)

TABLE 1: PHYSICAL CONSTANTS/TABEL 1: FISIESE KONSTANTES

         NAME/NAAM                 SYMBOL/SIMBOOL     VALUE/WAARDE
Acceleration due to gravity
                                         g                 9,8 m·s-2
Swaartekragversnelling
Universal gravitational constant
                                         G           6,67 x 10-11 N·m2·kg-2
Universele gravitasiekonstant
Radius of the Earth
                                         RE              6,38 x 106 m
Radius van die Aarde
Mass of the Earth
                                         ME             5,98 x 1024 kg
Massa van die Aarde
Speed of light in a vacuum
                                          c             3,0 x 108 m·s-1
Spoed van lig in 'n vakuum
Planck's constant
                                         h              6,63 x 10-34 J·s
Planck se konstante
Coulomb's constant
                                          k           9,0 x 109 N·m2·C-2
Coulomb se konstante
Charge on electron
                                         e               -1,6 x 10-19 C
Lading op elektron
Electron mass
                                         me             9,11 x 10-31 kg
Elektronmassa

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Physical Sciences/P1                                          2                                       DBE/November 2022
                                                            NSC

TABLE 2: FORMULAE/TABEL 2: FORMULES

MOTION/BEWEGING
v f  vi  a t                                            Δx  v i Δt  21 at 2 or/of Δy  v i Δt  21 at 2
                                                                 v  vf                 v  vf 
v f  v i  2ax or/of v f  v i  2ay
  2        2                          2        2
                                                           Δx   i       Δt or/of Δy   i       Δt
                                                                 2                      2 

FORCE/KRAG

Fnet  ma                                                  p mv
fs max = μsN                                               fk = μkN
Fnet Δt = Δp
                                                           w  mg
Δp = mv f - mvi
         m1m 2                                     m1m 2             M                             M
F=G                        or/of          F=G              gG                    or/of         gG 2
          d2                                        r2               d2                            r

WORK, ENERGY AND POWER/ARBEID, ENERGIE EN DRYWING

W = FΔx cos                                               U mgh                  or/of        EP  mgh
                                                           Wnet  K              or/of         Wnet  Ek
   1                                           1
K  mv2                    or/of           Ek  mv2
   2                                           2
                                                           K  K f  K i          or/of        Ek  Ekf  Eki
                                                                W
Wnc  K  U or/of Wnc  Ek  Ep                        P
                                                                t
Pave = Fvave       /       Pgemid = Fvgemid

WAVES, SOUND AND LIGHT/GOLWE, KLANK EN LIG

                                                                1
vf                                                       T
                                                                f
       v  vL                             v  vL                                           hc
fL           fs       /           fL           fb        E  hf         or/of     E
       v  vs                             v  vb                                           
E  Wo  Ek(max) or/of E  Wo  K max where/waar
                                                           1                                    1
E  hf and/en W0  hf0 and/en Ek (max)                        2
                                                             mvmax        or/of K max              2
                                                                                                  mvmax
                                                           2                                    2

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Physical Sciences/P1                                     3                                    DBE/November 2022
                                                       NSC

ELECTROSTATICS/ELEKTROSTATIKA

     kQ1Q 2                                                kQ
F                                                    E
       r2                                                  r2
      W                                                    F
V                                                    E
      q                                                    q

      Q                            Q
 n=               or/of       n=
      e                            qe

ELECTRIC CIRCUITS/ELEKTRIESE STROOMBANE

      V                                               emf ( ε ) = I(R + r)
R
      I                                               emk ( ε ) = I(R + r)

Rs  R1  R2  ...
 1    1    1                                          q  It
             .. .
Rp R1 R 2

W = Vq                                                     W
                                                      P
                                                           Δt
W = VI  t
                                                      P = VI
W = I2R  t
                                                      P  I 2R
         V Δt
          2
W=                                                         V2
          R                                           P
                                                           R

ALTERNATING CURRENT/WISSELSTROOM

                                                      Pave  Vrms Irms       /   Pgemid  Vwgk I wgk
          Imax                               I maks
Irms                     /        I wgk 
              2                                 2     Pave  Irms
                                                              2
                                                                  R      /       Pgemid  I 2wgk R
          Vmax                               Vmaks
Vrms                     /    Vwgk                              2
                                                                Vrms
                                                                                             2
                                                                                            Vwgk
              2                                 2     Pave              /       Pgemid 
                                                                 R                           R

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