PHYSICS (P1) 2022 November 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.
In this practic just select the correct answere

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

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?

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?

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 …

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.

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?

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?

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 r^2
as the proton and the electron approach each other?

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

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

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.

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?

1.10