Y12 MCQ Physics Quiz

The options below shows four physical quantities and their units. Which row is correct?

• strain - pascal

• charge - coulomb

• power - joule

• force constant - newton

Four students each carry out an experiment to determine the acceleration of free fall ( g ). Which is the least accurate value?

• 9.0 ± 1.0 ms^-2

• 9.5 ± 0.1 ms^-2

• 9.6 ± 0.4 ms^-2

• 9.7 ± 0.2 ms^-2

A uniform concrete slab is placed on two supports. The slab sags due to its own weight. Which point, A, B, C, or D, of the slab is under maximum compression?

• Point A

• Point B

• Point C

• Point D

The variation with time t of the force F acting on a ball is shown below.

• The area under the graph is equal to the work done by the force F.

• The ball has maximum acceleration at t = 5.0 x 10^-3 s.

• The area under the graph is equal to impulse.

• The area under the graph has units kg m s^-1.

The diagram below shows a rotating steam generator. What is the work done by the forces as the steam generator completes one revolution?

• 0 J

• 9.8 x 10^-3 J

• 3.1 x 10^-2 J

• 6.2 x 10^-2 J

Which circuit below can be used to monitor the variation of light intensity in a room?

• Circuit A

• Circuit B

• Circuit C

• Circuit D

A household is planning to change all their 60W filament bulbs to 12W LED bulbs. The household has a total of 10 bulbs. Each bulb will be used for about 2000 hours in one year. The cost of 1 kWh is 15.4 p. What would the annual saving be? Type your answer in pence, rounded to the nearest whole number. Do not write a unit.

A force of 12N moves an object at an angle θ to the force. The object travels 9.6m and the work done by the force is 52J. What is the angle θ?

• 1.1°

• 27°

• 63°

• 90°

The resistance of a wire of length L is 3.00 Ω. The wire is extended so that its length becomes 1.50L. Its volume remains the same. What is the resistance of the extended wire?

• 2.00 Ω

• 3.00 Ω

• 4.50 Ω

• 6.75 Ω

The diagram below shows a potential divider circuit. The minimum resistance of the variable resistor is zero and its maximum resistance is 3R, where R is the resistance of the fixed resistor. The power supply has electromotive force (e.m.f.) 4.0V and negligible internal resistance. The voltmeter has infinite resistance. The resistance of the variable resistor is changed from its minimum to its maximum value. How does the voltmeter reading change?

• from 0V to 1.0V

• from 0V to 3.0V

• from 1.0V to 4.0V

• from 3.0V to 4.0V