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Course: AS Physics 9702
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AS Physics 9702

1. Physical quantities and kinematics

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2. Dynamics, forces and pressure

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3. Work, energy, power and deformation

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4. Waves and superposition

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5. Electricity and D.C. circuits

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7. Circular motion and gravitational fields (A Level)

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8. Thermal physics (A Level)

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10. Electric fields and capacitance (A Level)

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11. Magnetic fields and alternating currents (A Level)

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12. Quantum and nuclear physics (A Level)

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13. Medical physics and astronomy (A Level)

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Quiz

AS & A Level Physics 9702 – 8.3 Thermodynamics – Quiz

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Thermodynamics AS Physics quiz: free practice for AS Physics 9702. Work through this Thermodynamics AS Physics quiz and get instant feedback on every answer. If you get stuck, review the 8.3 THERMODYNAMICS — Notes lesson. More practice: AS Physics 9702 — all units. Syllabus: Cambridge AS & A Level Physics 9702 syllabus.

1.

The internal energy of a system is

the kinetic energy of the system as a whole
the thermal energy supplied to it
the sum of the random kinetic and potential energies of its molecules
its temperature
2.

The first law of thermodynamics may be written ΔU = q + W, where W is

the work done on the system
the work done by the system
the weight of the system
the heat lost
3.

A gas is compressed: 300 J of work is done on it and 100 J of thermal energy leaves it. What is the change in its internal energy?

+200 J
+400 J
−200 J
−400 J
4.

For an ideal gas, the internal energy depends only on

its pressure
its volume
its thermodynamic temperature
its density
5.

A gas expands at constant pressure 1.0 × 10⁵ Pa from 2.0 × 10⁻³ m³ to 5.0 × 10⁻³ m³. What is the work done by the gas?

500 J
700 J
300 J
200 J
6.

An ideal gas expands at constant temperature. Which is correct?

ΔU increases
No work is done
ΔU = 0 and the gas absorbs thermal energy equal to the work it does
No thermal energy is transferred
7.

A gas is compressed rapidly so that no thermal energy can leave. Its temperature

falls
stays the same
rises
falls to absolute zero
8.

When a solid melts, its internal energy increases because

the kinetic energy of its molecules increases
its temperature rises
the potential energy of its molecules increases
work is done on it
9.

When a gas does work in expanding against the surroundings with no heating, its internal energy

increases
is unchanged
becomes zero
decreases
10.

A rise in temperature of a body corresponds to an increase in

the mean random kinetic energy of its molecules
the potential energy only
its mass
its volume only
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