Physical Sciences Grade 12 P1 NSC November Mock 2026 QP

Mock hlayiso mock exams Practice Series: Grade 12 NSC Preparation WWW.HLAYISO.COM NATIONAL SENIOR CERTIFICATE GRADE 12 PHYSICAL SCIENCES: PHYSICS (P1) MOCK EXAMINATION 2026 MARKS: 150 TIME: 3 hours This question paper consists of 12 pages and 3 data sheets. Copyright reserved Please turn over

Physical Sciences/P1 2 Hlayiso/Mock 2026 NSC Mock INSTRUCTIONS AND INFORMATION 1. Write your name and class (or examination number) in the appropriate spaces on the ANSWER BOOK. 2. This question paper consists of TEN 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. Show ALL formulae and substitutions in ALL calculations. 8. Round off your FINAL numerical answers to a minimum of TWO decimal places. 9. Give brief motivations, discussions, etc. where required. 10. You are advised to use the attached DATA SHEETS. 11. Write neatly and legibly. Copyright reserved Please turn over

Physical Sciences/P1 3 Hlayiso/Mock 2026 NSC Mock 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 The tendency of an object to remain at rest or to continue moving in a straight line at a constant velocity is called … A momentum. B inertia. C impulse. D weight. (2) 1.2 Two objects of masses m and 2m are a distance r apart. The gravitational force that the one object exerts on the other is F. The mass of EACH object is now doubled and the distance between their centres is also doubled. The magnitude of the gravitational force is now … A 1 4F B 1F 2 C F D 2F (2) 1.3 A ball is thrown vertically upwards. Ignore the effects of air friction. Which ONE of the following combinations is CORRECT for the ball at its MAXIMUM HEIGHT? VELOCITY ACCELERATION A Zero Zero B Maximum 9,8 m·s–2 downwards (2) C Zero 9,8 m·s–2 upwards D Zero 9,8 m·s–2 downwards 1.4 Airbags in a car reduce injuries during a collision because they increase the time taken for a passenger to come to rest. This decreases the … A net force on the passenger. B change in momentum of the passenger. C impulse on the passenger. D mass of the passenger. (2) Copyright reserved Please turn over

Physical Sciences/P1 4 Hlayiso/Mock 2026 NSC Mock 1.5 A crate is pulled by a constant horizontal force F so that it moves at a CONSTANT VELOCITY across a rough horizontal surface. Which ONE of the following statements about the NET WORK done on the crate is CORRECT? The net work done on the crate is … A zero. B equal to the work done by force F. C equal to the work done by friction. D positive. (2) 1.6 A police car with its siren on moves at a CONSTANT VELOCITY towards a stationary listener. Which ONE of the following combinations is CORRECT for the frequency detected by the listener while the car approaches? DETECTED DETECTED FREQUENCY FREQUENCY AS THE COMPARED TO CAR COMES CLOSER SOURCE FREQUENCY A Lower Increases (2) B Higher Increases C Lower Remains constant D Higher Remains constant 1.7 Two identical point charges, each of charge +Q, are placed a distance r apart. The electrostatic force that each charge exerts on the other is F. +Q +Q r One of the charges is replaced by a charge of –2Q and the distance between the charges is changed to 21 r. Which ONE of the following describes the new force between the charges CORRECTLY? A 2F, attraction B 8F, attraction C 8F, repulsion D 4F, attraction (2) Copyright reserved Please turn over

Physical Sciences/P1 5 Hlayiso/Mock 2026 NSC Mock 1.8 In the circuit below, the battery has an internal resistance r. Voltmeter V is connected across the battery. Switch S is initially OPEN. R1 R2 A S R3 r ε V Switch S is now CLOSED. How do the readings on ammeter A and voltmeter V change? READING ON A READING ON V A Increases Increases B Decreases Decreases (2) C Increases Decreases D Decreases Increases 1.9 The coil of an AC generator rotates in a uniform magnetic field. The induced emf is a MAXIMUM when the plane of the coil is … A perpendicular to the magnetic field. B parallel to the magnetic field. C at an angle of 45◦ to the magnetic field. D at an angle of 60◦ to the magnetic field. (2) 1.10 Light shines on a metal surface and photoelectrons are emitted. Which ONE of the following changes will INCREASE the maximum kinetic energy of the emitted photoelectrons? A Increasing the intensity of the light B Increasing the wavelength of the light C Using a metal with a larger work function D Increasing the frequency of the light (2) [20] Copyright reserved Please turn over

Physical Sciences/P1 6 Hlayiso/Mock 2026 NSC Mock QUESTION 2 (Start on a new page.) Block A of mass 4 kg and block B of mass 6 kg are connected by a light, inextensible string. The blocks rest on a rough horizontal surface. A constant force F of magnitude 60 N is applied to block B at an angle of 30◦ above the horizontal, as shown in the diagram below. The blocks accelerate to the right. The coefficient of kinetic friction between EACH block and the surface is 0,2. F = 60 N A string B 30◦ 4 kg 6 kg 2.1 State Newton’s Second Law of Motion in words. (2) 2.2 Draw a labelled free-body diagram showing ALL the forces acting on block B. (5) 2.3 Calculate the magnitude of the normal force acting on block B. (3) 2.4 Calculate the magnitude of the tension in the string. (5) The string suddenly breaks while the blocks are moving. 2.5 Calculate the magnitude of the acceleration of block A immediately after the string breaks. (2) [17] Copyright reserved Please turn over

Physical Sciences/P1 7 Hlayiso/Mock 2026 NSC Mock QUESTION 3 (Start on a new page.) Ball P is thrown vertically upwards at 14 m·s–1 from the edge of the flat roof of a building that is 25 m high. Ball P misses the roof on its way down and falls to the ground below. Ignore the effects of air friction. 14 m·s–1 P 25 m ground 3.1 Define the term free fall. (2) 3.2 Calculate the time taken by ball P to reach its maximum height. (3) 3.3 Calculate the maximum height above the GROUND reached by ball P. (3) At the instant that ball P reaches its maximum height, ball Q is DROPPED from rest from the edge of the same roof. 3.4 Calculate the time interval between ball Q striking the ground and ball P striking the ground. (4) 3.5 Sketch a velocity versus time graph for the motion of ball P from the moment it is thrown until it strikes the ground. Take UPWARDS as POSITIVE. Indicate the following on the graph: • The initial velocity of ball P • The time at which ball P reaches its maximum height (3) [15] Copyright reserved Please turn over

Physical Sciences/P1 8 Hlayiso/Mock 2026 NSC Mock QUESTION 4 (Start on a new page.) Trolley A of mass 2 kg moves EAST at 3 m·s–1 along a straight, frictionless, horizontal track. It collides with a stationary trolley B of mass 1,5 kg, as shown below. at rest E 3 m·s–1 A 2 kg B 1,5 kg After the collision, trolley A continues to move EAST at 0,9 m·s–1 . 4.1 State the principle of conservation of linear momentum in words. (2) 4.2 Calculate the velocity of trolley B immediately after the collision. (4) 4.3 Is the collision ELASTIC or INELASTIC? Use a calculation to support the answer. (4) 4.4 The trolleys are in contact for 0,15 s. Calculate the magnitude of the average force that trolley A exerts on trolley B. (3) [13] QUESTION 5 (Start on a new page.) A box of mass 60 kg is initially at rest at point A at the bottom of a rough incline that makes an angle of 25◦ with the horizontal. A constant force F, applied PARALLEL to the incline by a rope, pulls the box up the incline. The box passes point B, 8 m from point A along the incline, at a speed of 4 m·s–1 . A constant kinetic frictional force of 90 N acts on the box as it moves from A to B. F B 60 kg 8m A 25◦ 5.1 Define the term non-conservative force. (2) 5.2 Draw a labelled free-body diagram showing ALL the forces acting on the box as it moves up the incline. (4) 5.3 Use ENERGY PRINCIPLES ONLY to calculate the magnitude of force F. (5) 5.4 Calculate the average power delivered by force F as the box moves from A to B. (3) [14] Copyright reserved Please turn over

Physical Sciences/P1 9 Hlayiso/Mock 2026 NSC Mock QUESTION 6 (Start on a new page.) A police car with its siren on travels at a constant velocity along a straight road. A learner standing next to the road uses a sound detector to measure the frequency of the siren. One reading is taken while the car approaches the learner and another reading is taken after the car has passed the learner. The readings are recorded in the table below. READING DETECTED FREQUENCY (Hz) 1 780 2 920 Take the speed of sound in air as 340 m·s–1 . 6.1 State the Doppler effect in words. (2) 6.2 Which reading, 1 or 2, was taken while the car APPROACHED the learner? (1) 6.3 Calculate the speed of the police car. (6) 6.4 The spectral lines in the light from a distant galaxy are observed to be shifted towards the red end of the spectrum. What does this indicate about the motion of the galaxy relative to the Earth? Explain the answer. (2) [11] QUESTION 7 (Start on a new page.) 7.1 Two identical small metal spheres, X and Y, on insulated stands carry charges of +6 nC and –2 nC respectively. The spheres are brought into contact and then separated. 7.1.1 Calculate the charge on sphere X after the spheres are separated. (2) 7.1.2 Calculate the number of electrons transferred during contact. State the direction in which the electrons were transferred. (3) 7.2 Point charges Q1 = +4 µ C and Q2 = –6 µ C are fixed 0,4 m apart. Point P is 0,2 m to the right of Q2 , on the line joining the charges, as shown below. Q1 = +4 µ C Q2 = –6 µ C P 0,4 m 0,2 m 7.2.1 Define the term electric field at a point. (2) 7.2.2 Calculate the net electric field at point P. (5) 7.2.3 An electron is now placed at point P. Calculate the magnitude of the electrostatic force that the electron experiences and state its direction. (3) [15] Copyright reserved Please turn over

Physical Sciences/P1 10 Hlayiso/Mock 2026 NSC Mock QUESTION 8 (Start on a new page.) In the circuit below, the battery has an emf (ε ) and an internal resistance r. Resistor R1 = 3 Ω is connected in series with a parallel combination of R2 = 6 Ω and R3 = 12 Ω. The resistances of the ammeter, the switch and the connecting wires are negligible. The voltmeter has a very high resistance. V ε r R1 = 3 Ω R2 = 6 Ω R3 = 12 Ω A S When switch S is OPEN, the reading on the voltmeter is 12 V. When switch S is CLOSED, the reading on the voltmeter is 10,5 V. 8.1 Define the term emf of a battery. (2) Switch S is CLOSED. 8.2 Calculate the total resistance of the external circuit. (3) 8.3 Calculate the internal resistance of the battery. (4) 8.4 Calculate the current through resistor R2 . (3) 8.5 Calculate the energy dissipated in resistor R3 in 2 minutes. (3) 8.6 Resistor R3 now burns out (breaks). How will the reading on the voltmeter be affected? Choose from INCREASES, DECREASES or REMAINS THE SAME. Explain the answer. (4) [19] Copyright reserved Please turn over

Physical Sciences/P1 11 Hlayiso/Mock 2026 NSC Mock QUESTION 9 (Start on a new page.) 9.1 The simplified diagram below represents an AC generator. The coil is rotated in a uniform magnetic field between the poles of a magnet. direction of rotation coil N S X brush resistor 9.1.1 Write down the name of component X. (1) 9.1.2 Name the principle on which the generator operates. (1) 9.1.3 Write down the energy conversion that takes place in the generator. (1) 9.1.4 State ONE way in which the maximum emf produced by this generator can be increased. (1) 9.2 An electric kettle is rated at 2 000 W. It operates at an rms potential difference of 230 V. 9.2.1 Define the term rms current. (2) 9.2.2 Calculate the maximum (peak) current through the kettle. (3) 9.2.3 The kettle is used for a total of 15 minutes every day. Calculate the cost of operating the kettle for 30 days if the cost of electricity is R3,50 per kW·h. (3) [12] Copyright reserved Please turn over

Physical Sciences/P1 12 Hlayiso/Mock 2026 NSC Mock QUESTION 10 (Start on a new page.) In an investigation, light of different frequencies is shone onto the surface of a metal X in a photocell. The maximum kinetic energy of the emitted photoelectrons is determined for each frequency. The results are shown in the graph below. 3,0 Ek(max) (× 10–19 J) 2,5 2,0 1,5 1,0 0,5 0,0 0 1 2 3 4 5 6 7 8 9 10 Frequency (× 1014 Hz) 10.1 Define the term photoelectric effect. (2) 10.2 Use the graph to write down the threshold frequency of metal X. (1) 10.3 Calculate the work function of metal X. (3) 10.4 Light of wavelength 400 nm is now shone onto metal X. Calculate the maximum speed of the emitted photoelectrons. (5) 10.5 The intensity of the 400 nm light is now increased. How will the current in the photocell be affected? Choose from INCREASES, DECREASES or REMAINS THE SAME. Explain the answer. (3) [14] TOTAL: 150 Copyright reserved Please turn over

Physical Sciences/P1 1 Hlayiso/Mock 2026 NSC Mock DATA FOR PHYSICAL SCIENCES GRADE 12 PAPER 1 (PHYSICS) TABLE 1: PHYSICAL CONSTANTS NAME SYMBOL VALUE Acceleration due to gravity g 9,8 m·s–2 Universal gravitational constant G 6,67× 10–11 N·m2 ·kg–2 Radius of the Earth RE 6,38× 106 m Mass of the Earth ME 5,98× 1024 kg Speed of light in a vacuum c 3× 108 m·s–1 Planck’s constant h 6,63× 10–34 J·s Coulomb’s constant k 9× 109 N·m2 ·C–2 Charge on electron e 1,6× 10–19 C Electron mass me 9,11× 10–31 kg Copyright reserved Please turn over

Physical Sciences/P1 2 Hlayiso/Mock 2026 NSC Mock TABLE 2: FORMULAE MOTION vf = vi + a∆t ∆x = vi ∆t + 21 a∆t2 or ∆y = vi ∆t + 12 a∆t2 ( ) ( ) vi + vf vi + vf v2f = v2i + 2a∆x or v2f = v2i + 2a∆y ∆x = ∆t or ∆y = ∆t 2 2 FORCE Fnet = ma p = mv fmax s = µs N fk = µk N Fnet ∆t = ∆p ∆p = mvf – mvi w = mg m m m m M M F = G 1 2 2 or F = G 12 2 g = G 2 or g = G 2 d r d r WORK, ENERGY AND POWER W = F∆x cos θ U = mgh or EP = mgh K = 12 mv2 or Ek = 12 mv2 Wnet = ∆K or Wnet = ∆Ek Wnc = ∆K + ∆U or Wnc = ∆Ek + ∆Ep ∆K = Kf – Ki or ∆Ek = Ekf – Eki W Pave = Fvave P= ∆t WAVES, SOUND AND LIGHT 1 v = fλ T= f v ± vL hc fL = fs E = hf or E = v ± vs λ E = W0 + Ek(max) or E = W0 + Kmax where E = hf and W0 = hf0 and Ek(max) = 12 mv2max or Kmax = 12 mv2max Copyright reserved Please turn over

Physical Sciences/P1 3 Hlayiso/Mock 2026 NSC Mock ELECTROSTATICS kQ1 Q2 kQ F= E= 2 r2 r W F V= E= q q Q Q n= or n = e qe ELECTRIC CIRCUITS V R= emf (ε ) = I(R + r) I Rs = R1 + R2 + . . . q = I∆t 1 1 1 = + +... Rp R 1 R 2 W W = Vq P= ∆t W = VI∆t P = VI W = I2 R∆t P = I2 R V2 ∆t V2 W= P= R R ALTERNATING CURRENT Imax Irms = √ Pave = Vrms Irms 2 Vmax Vrms = √ Pave = I2rms R 2 V2 Pave = rms R Copyright reserved