Practice MCQs For Thermal Physics

This quiz contains practice questions for GCE ‘O’ level topic: Thermal Physics. There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you wish to contribute questions to this quiz, please contact us.

The quiz comprises of 10 questions, which are randomly selected from a large pool of questions. After completion, you can refresh the page and try the quiz again for a new set of 10 questions.

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1. The diagram shows a cross-section through a rain-water puddle formed in a shallow hole in a road surface.

Over a period of time, air temperature, wind speed and win direction remains constant.

What happens to the rate of evaporation of water from the puddle?

It increases, because the puddle gets shallower.

It decreases, because the surface area decreases.

It increases, because the surface area decreases.

It remains constant.

2. When ice changes into water at $0^{\circ} \, C$,

1. Work is done in breaking the molecular structure of ice in solid state.
2. Internal energy is increased.
3. Energy is absorbed to raise the temperature.

1, 2 and 3

1 and 3 only

1 and 2 only

2 only

3. Which of the following DOES NOT result in faster speed of response of a thermometer?

Using a bore with a larger diameter.

Using a bulb with a thinner glass.

Using mercury instead of alcohol.

Using a smaller bulb.

4. A person cannot unscrew the lid of a jar of jam. He finds that the lid can be unscrewed after it has been held under hot, running water for a few seconds.

Why is this?

The air pressure in the jar falls.

The glass expands.

The jam melts.

The lid expands.

5. A rod of metal is heated at one end.

Which statement best describes the conduction of heat through the metal?

Free electrons move from the hot end and hit atoms further along the rod.

Free electrons vibrate and pass energy to free electrons further along the rod.

Atoms vibrate and hit atoms at the cold end.

Atoms move from the hot end and hit electrons at the cold end.

6. What will not affect the rate of evaporation from the surface of a liquid?

Temperature of the liquid

Draughts above the surface of the liquid

Surface area of the liquid

Depth of the liquid

7. A new liquid is tested to decide whether it is suitable for use in a liquid-in-glass thermometer.

It is found that the liquid does not expand uniformly with temperature.

What will be the effect of this on the scale of the thermometer?

The markings are too far apart.

The markings are too close together.

It has a short range.

It is not linear.

8. What makes a thermometer sensitive to small changes in temperature?

A stem with a thick glass wall

A shiny liquid in its bore

A bulb with a thin glass wall

A very narrow bore

9. A 200 g mass of copper is heated for 40 s by a heater that produces 3000 J/min.

The specific heat capacity of copper is 400 J/(kg K).

What is the rise in temperature?

0.25 K

250 K

2.5 K

25 K

10. The diagram shows four similar cans. Each can contains the same volume of water initially at $80^{\circ}C$. After five minutes, which can will contain the coolest water?

A

B

C

D

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