Physics Grade12 2023 November Paper1 Exam Practice Activity

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.

This is how your instructions will be in the exam.For this activity, just select the correct answer.

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 …

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

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 …

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.

Ignore the effects of air friction.
Between which two points will the ball undergo the greatest change in kinetic
energy?

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

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

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

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 …

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.

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

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

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?

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?