# Physical Sciences Grade 12 P1 NSC November 2023 QP (Eng)

> Grade 12 Physical Sciences Paper 1 question paper from the NSC November Exam 2023 (English), 22 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/physical-sciences-p1-nov-2023-eng/0ce80015-1c09-4bb2-bc78-8d5d2b7de1ba
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 12
- Document type: Question paper
- Year: 2023
- Exam period: NSC November Exam
- Paper: 1
- Curriculum: CAPS
- Pages: 22

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## About this document

Physical Sciences · Grade 12 · NSC November Exam · 2023. Question paper, 22 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 2023

MARKS: 150

TIME: 3 hours

              This question paper consists of 19 pages and 3 data sheets.

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Physical Sciences/P1                         2                         DBE/November 2023
                                            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 2023
                                             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       A constant net force is applied to a block. Which ONE of the following
          statements is CORRECT?

          The block will move with a …

          A     constant velocity.

          B     constant acceleration.

          C     constantly increasing acceleration.

          D     constantly decreasing acceleration.                                               (2)

1.2       A crate of mass m is stationary on a plane inclined at an angle θ with the
          horizontal.

                                              m

                                     θ

          Which ONE of the following statements regarding the magnitude of the
          frictional force acting on the crate is CORRECT?

          The magnitude of the frictional force acting on the crate is …

          A     equal to the component of the weight of the crate which is parallel to the
                plane.

          B     larger than the component of the weight of the crate which is parallel to
                the plane.

          C     equal to the component of the weight of the crate which is perpendicular
                to the plane.

          D     larger than the component of the weight of the crate which is
                perpendicular to the plane.                                                       (2)

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Physical Sciences/P1                             4                          DBE/November 2023
                                                NSC

1.3       A ball is projected vertically upwards from the top edge of a building. Points P,
          Q, R and S represent different positions during the motion of the ball, as
          shown in the diagram below.

                                                    Q

                                                P       R

                                                        S
                                                                 Ground
          Ignore the effects of air friction.

          Between which two points will the ball undergo the greatest change in kinetic
          energy?

          A     P and S

          B     P and R

          C     R and S

          D     Q and S                                                                            (2)

1.4       A ball is dropped from height h and strikes the floor with momentum p. The
          ball is then dropped from height ½h.

                                                    h
                                                            ½h

          Ignore the effects of air friction.

          Which ONE of the following represents the momentum of the ball when it
          strikes the floor after being dropped from height ½h?

          A     p

                     1
          B            p
                     2

          C     1
                  p
                2
          D     2p                                                                                 (2)

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Physical Sciences/P1                           5                          DBE/November 2023
                                              NSC

1.5       A box moves on a horizontal surface. The diagram below shows all the forces
          acting on the box.

                                         P          Q

                               S

                                          R
          Which ONE of the following combinations of forces do work on the box?

          A     P and R only

          B     Q and S only

          C     Q, R and S only

          D     P, Q, R and S                                                                    (2)

1.6       A train moving at a constant velocity towards a stationary listener emits sound
          waves of constant frequency.

          Which ONE the following statements about the sound waves observed by the
          listener is CORRECT?

          The observed …

          A     frequency is higher than the emitted frequency.

          B     wavelength is longer than the emitted wavelength.

          C     frequency is lower than the emitted frequency.

          D     wavelength is equal to the emitted wavelength.                                   (2)

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Physical Sciences/P1                         6                              DBE/November 2023
                                            NSC

1.7       Refer to the diagram below.

          Q and R are small spheres suspended by light insulated strings.

          When a negatively charged rod is brought close to sphere Q, sphere Q is
          repelled. When the negatively charged rod is brought close to sphere R,
          sphere R is attracted.

                 - -                                       - -
                     -         Q                               -         R

          Which ONE of the combinations below can be possible for the nature of the
          charges on spheres Q and R?

                     NATURE OF CHARGE ON                NATURE OF CHARGE ON
                          SPHERE Q                           SPHERE R
           A               Negative                           Negative
           B                Positive                           Neutral
           C                Neutral                            Positive
           D               Negative                            Neutral                            (2)

1.8       Four voltmeters, V1, V2, V3 and V4, are connected in a circuit, as shown in the
          diagram below.
                                                V1

                                                ε
                                                               R       V2
                       V4     A

                                                    S

                                                     V3

          Which voltmeter(s) will have the same reading as voltmeter V1 when the
          switch is open?

          A     V2 only

          B     V3 only

          C     V4 only

          D     V2 and V4                                                                         (2)

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Physical Sciences/P1                          7                             DBE/November 2023
                                             NSC

1.9       A split-ring commutator connects the coil of a generator to an external circuit.

          Which ONE of the combinations below is CORRECT for the magnitude and
          direction of the induced current in the external circuit?

                         MAGNITUDE OF                          DIRECTION OF
                       INDUCED CURRENT                       INDUCED CURRENT
           A               Constant                               Constant
           B               Constant                               Changes
           C               Changes                                Constant
           D               Changes                                Changes                          (2)

1.10      Light of a suitable frequency is shone on the surface of a metal and electrons
          are ejected from the metal.

          Which ONE of the following is equal to the ratio of the work function to the
          threshold frequency of the metal?

          A     Planck's constant

          B     The inverse of Planck's constant

          C     The energy of the incident photons

          D     The maximum kinetic energy of the ejected electrons                                (2)
                                                                                                   [20]

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Physical Sciences/P1                            8                           DBE/November 2023
                                               NSC

QUESTION 2 (Start on a new page.)

Two blocks, A, of mass 4 kg, and B, of mass 9 kg, are connected by a light
inextensible string. The blocks are held at rest on a plane which is inclined at an angle
of 35º with the horizontal.

A constant force, F, acting parallel to the plane, is applied to block B, as shown in the
diagram below. The blocks now accelerate up the plane at 2 m·s-2.

                                                      F

                                 Block B
                                     9 kg
                           string
              Block A
                     4 kg

                       35º

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

The kinetic frictional forces acting on blocks A and B are 5,88 N and 13,23 N
respectively.

2.2       Draw a labelled free-body diagram showing all the forces acting on block A.              (4)

2.3       Calculate the magnitude of:

          2.3.1        The tension in the string                                                   (4)

          2.3.2        Force F                                                                     (3)

2.4       The angle that the plane makes with the horizontal is now decreased.

          2.4.1        How will this change the kinetic frictional force acting on block A?
                       Choose from INCREASES, DECREASES or REMAINS THE
                       SAME.                                                                       (1)

          2.4.2        Explain the answer to QUESTION 2.4.1.                                       (2)
                                                                                                   [16]

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Physical Sciences/P1                            9                            DBE/November 2023
                                               NSC

QUESTION 3 (Start on a new page.)

A ball of mass 0,5 kg is thrown vertically upwards from the top edge of a building which
is 15,3 m high. The ball reaches a maximum height of 5,89 m above the top of the
building. The ball strikes the ground and bounces vertically upwards, reaching a
maximum height at point P, as shown in the diagram below.

                                      5,89 m

                                                       P
                                      15,3 m

                                                                                   Ground

Ignore the effects of air friction.

3.1       Define the term free fall.                                                                 (2)

3.2       Using only EQUATIONS OF MOTION, calculate the speed at which the ball
          was projected upwards.                                                                     (3)

3.3       After the collision with the ground, the ball leaves the ground with a speed of
          11,92 m·s-1.

          Calculate the:

          3.3.1        Amount of kinetic energy lost by the ball during the collision with
                       the ground                                                                    (5)

          3.3.2        Time taken for the ball to reach point P after leaving the ground             (3)

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Physical Sciences/P1                              10                     DBE/November 2023
                                                  NSC

3.4       The velocity-time graph for the motion of the ball from the instant it is
          projected upwards from the top edge of the building until the time it reaches
          point P is shown below.

                                              K

                                              L

                           Velocity (m·s-1)   0
                                                        t1         t2   Time (s)

          Write down the numerical values indicated by EACH of the following:

          3.4.1        K                                                                        (1)

          3.4.2        L                                                                        (1)

          3.4.3        t2  t1                                                                  (1)
                                                                                                [16]

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Physical Sciences/P1                            11                           DBE/November 2023
                                                NSC

QUESTION 4 (Start on a new page.)

A wooden trolley of mass 2,7 kg moves to the left with a constant velocity of 3 m∙s-1.
A bullet of mass 0,03 kg is fired horizontally from the left towards the trolley.
(See DIAGRAM 1.)

The bullet strikes the trolley and comes to rest inside the trolley in 0,02 s. The average
net force exerted by the trolley on the bullet during this time is 591 N. The bullet-trolley
combination now moves to the right. (See DIAGRAM 2.)

                       Before collision                             After collision
                                    3 m∙s-1

                                      2,7 kg
      0,03 kg bullet

                       DIAGRAM 1                                     DIAGRAM 2

Ignore all frictional and rotational effects.

4.1       Write down the magnitude and direction of the average net force that the
          bullet exerts on the trolley.                                                             (1)

4.2       Calculate the magnitude of the velocity with which the bullet strikes the trolley.        (4)

4.3       State the principle of conservation of linear momentum in words.                          (2)

4.4       Calculate the magnitude of the velocity of the bullet-trolley combination after
          the collision.                                                                            (4)
                                                                                                    [11]

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Physical Sciences/P1                                                  12                               DBE/November 2023
                                                                      NSC

QUESTION 5 (Start on a new page.)

Learners conduct an experiment to determine how the initial kinetic energy given to a
trolley affects the distance the trolley moves on a rough horizontal surface. A learner
pushes a trolley of unknown mass until it reaches point A with kinetic energy EkA. The
horizontal distance (Δx) travelled by the trolley before it comes to rest is then
measured. See the diagram below.

                Trolley
                                                                     ∆x

                          A

The experiment is repeated with the trolley moving on the same rough horizontal
surface but with different initial kinetic energies at point A.

The results obtained are shown in the graph below.

                              Distance travelled, Δx (m)
                                                           4,5

                                                           3,0

                                                           1,5

                                                                 0      6           12        18
                                                                     Initial kinetic energy, EkA (J)

Ignore the rotational effects of the wheels of the trolley.

5.1       Draw a labelled free-body diagram showing all the forces acting on the trolley
          during its motion after passing point A.                                                                           (3)

5.2       Name the independent variable in this experiment.                                                                  (1)

5.3       State the work-energy theorem in words.                                                                            (2)

5.4       Calculate the mass of the trolley if the coefficient of kinetic friction between
          the wheels of the trolley and the rough horizontal surface is 0,18.                                                (6)
                                                                                                                             [12]

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Physical Sciences/P1                           13                            DBE/November 2023
                                               NSC

QUESTION 6 (Start on a new page.)

6.1       An ambulance is moving away from a stationary listener with a constant
          velocity of 25 m∙s-1. The siren of the ambulance emits sound waves at a
          frequency of 550 Hz. The listener detects the frequency of these sound waves
          to be 512,64 Hz.

          Ignore the effects of wind.

          6.1.1        State the Doppler effect in words.                                           (2)

          6.1.2        Use the given information to calculate the speed of sound in air.            (5)

          6.1.3        If the ambulance moves away from the stationary listener with a
                       constant velocity which is greater than 25 m∙s-1, how will EACH of
                       the following change? Choose from INCREASES, DECREASES or
                       REMAINS THE SAME.

                       (a)   The speed of sound in air                                              (1)

                       (b)   The frequency of the sound waves emitted by the siren                  (1)

                       (c)   The frequency of the sound waves detected by the listener              (1)

6.2       The spectrum of a distant star when viewed from the Earth is red shifted.

          6.2.1        Is the star moving AWAY FROM or TOWARDS the Earth?                           (1)

          6.2.2        Use the Doppler effect to explain the answer to QUESTION 6.2.1.              (2)
                                                                                                    [13]

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Physical Sciences/P1                            14                            DBE/November 2023
                                                NSC

QUESTION 7 (Start on a new page.)

Two point charges, A and B, each with a charge of +3 x 10-9 C, are stationary on a
horizontal surface. Point P is r metres from charge A and 2r metres from charge B, as
shown in the diagram below.

                                        r              2r

                +3 x 10-9 C                                           +3 x 10-9 C
                              A             P                     B

7.1       Describe an electric field.                                                               (2)

7.2       Draw the resultant electric field pattern due to charges A and B.                         (3)

The magnitude of the net electric field at point P is 27 N·C-1.

7.3       Calculate the value of r.                                                                 (5)

7.4       Calculate the magnitude of the net electrostatic force that an electron would
          experience if placed at point P.                                                          (3)
                                                                                                    [13]

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Physical Sciences/P1                            15                                 DBE/November 2023
                                                NSC

QUESTION 8 (Start on a new page.)

The circuit diagram below shows a battery with an emf of 12 V and an internal
resistance of 0,5 Ω connected to three resistors, a light bulb, a switch, an ammeter and
connecting wires. The ammeter and connecting wires have negligible resistance.

                                                  r                A
                                                0,5 Ω
                                       12 V

                                  R1 = 10 Ω                            RL = 10 Ω

                                  R2 = 10 Ω

                                   S
                                                                  R3 = 15 Ω

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

Switch S is initially CLOSED.

8.2       Calculate the:

          8.2.1        Total external resistance of the circuit                                          (5)

          8.2.2        Reading on the ammeter                                                            (3)

          8.2.3        Power dissipated by resistor R3                                                   (4)

8.3       Switch S is now OPENED.

          8.3.1        If the resistance of the light bulb remains constant, how will the
                       brightness of the light bulb be affected? Choose from INCREASES,
                       DECREASES or REMAINS THE SAME.                                                    (1)

          8.3.2        Explain the answer to QUESTION 8.3.1.                                             (3)
                                                                                                         [18]

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Physical Sciences/P1                          16                            DBE/November 2023
                                              NSC

QUESTION 9 (Start on a new page.)

9.1       A simplified diagram of a DC electric motor is shown below.

                                                            Coil

                                  S                                     N

                                        A

          9.1.1        Write down the name of component A.                                         (1)

          9.1.2        State the energy conversion that takes place in the motor.                  (1)

          9.1.3        In which direction will the coil rotate? Choose from CLOCKWISE or
                       ANTICLOCKWISE.                                                              (2)

          9.1.4        State TWO changes that can be made to the motor for the coil to
                       rotate faster.                                                              (2)

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Physical Sciences/P1                           17                               DBE/November 2023
                                               NSC

9.2       The circuit diagram below shows an electric kettle and a toaster connected to
          an AC source with an rms voltage of 220 V. The ammeter, connecting wires
          and switches S1 and S2 have negligible resistance.

                                             220 V

                             A
                                       S1
                                                     Kettle

                                        S2
                                                     Toaster

          9.2.1        Define the term root mean square current.                                      (2)

          9.2.2        When switch S1 is CLOSED and switch S2 is OPEN, the maximum
                       current through the circuit is 3,6 A.

                       Calculate the root mean square current in the circuit.                         (3)

          9.2.3        When switch S1 is OPEN and switch S2 is CLOSED, the root mean
                       square current in the circuit is 2,62 A.

                       Calculate the energy consumed by the toaster in two minutes.                   (3)
                                                                                                      [14]

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Physical Sciences/P1                           18                             DBE/November 2023
                                               NSC

QUESTION 10 (Start on a new page.)

10.1      Two small spheres, A and B, made of pure zinc are at rest 0,1 m apart on a
          wooden table. Sphere A is negatively charged and is free to move on the
          table, while sphere B is uncharged and fixed to the table, as shown in the
          diagram below.

                                                0,1 m
                                    A                           B
                                           Wooden table

          High-intensity ultraviolet light of frequency 2,8 x 1016 Hz is now shone
          continuously onto sphere B.

          The work function of zinc is 6,63 x 10-19 J.

          10.1.1       Define the term work function of a metal.                                     (2)

          10.1.2       Explain, using a suitable calculation, why the ultraviolet light shone
                       on sphere B will eject electrons from its surface.                            (4)

          10.1.3       Sphere A carries a charge of -5,4 x 10-6 C and requires a minimum
                       force of 0,027 N to move from rest.

                       Calculate the minimum number of photons of ultraviolet light that
                       must strike sphere B which will cause sphere A to move from its
                       rest position.                                                                (6)

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Physical Sciences/P1                                         19                                        DBE/November 2023
                                                             NSC

10.2      A beam of white light is shone through a cold gas. The emerging light is
          dispersed and a line spectrum is observed on a screen.

          10.2.1                       Name the type of line spectrum observed.                                            (1)

          10.2.2                       Describe the spectrum referred to in QUESTION 10.2.1.                               (2)

          10.2.3                       The diagrams below indicate some possible energy transitions
                                       made by atoms.

                                       Which ONE of the diagrams could result in the type of spectrum
                                       observed in QUESTION 10.2.1? Choose from DIAGRAM A or
                                       DIAGRAM B.

                                       DIAGRAM A                                                  DIAGRAM B

                   Increasing energy                                          Increasing energy
                                       E3                                                         E3

                                       E2                                                         E2

                                       E1                                                         E1

                                       E0                                                         E0                       (2)
                                                                                                                           [17]

                                                                                                            TOTAL:         150

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Physical Sciences/P1                     1                     DBE/November 2023
                                        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 gravitasiekonstante
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 2023
                                                      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 2f  v i2  2a Δx or/of v 2f  v i2  2a Δy        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
             m1m2                            m1m2              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 = FΔxcos                                          U  mgh                or/of    EP  mgh
                                                     Wnet  ΔK              or/of        Wnet  Ek
              2                              2
K = ½mv             or/of        Ek = ½mv
                                                     K  K f  K i         or/of    Ek  Ekf  Eki
                                                           W
Wnc  K  U or/of Wnc  ΔE k  ΔE p                P 
                                                           Δt
Pave = Fvave         /    Pgemid = Fvgemid

WAVES, SOUND AND LIGHT/GOLWE, KLANK EN LIG

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

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Physical Sciences/P1                                    3                                     DBE/November 2023
                                                       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 = IΔt
Rp R1 R 2

W = Vq                                                      W
                                                      P
                                                            Δt
W = VIΔt
                                                      P = VI
W = I2RΔt
                                                      P = I2R
         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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