8. Thermal Physics

Thermodynamics — Quiz

Test your understanding of thermodynamics with 5 practice questions.

Practice Questions

Question 1

A gas undergoes an isothermal expansion at a temperature of 300 K. The initial volume is 2.0 L and the final volume is 8.0 L. If the initial pressure is 500 kPa, what is the final pressure of the gas assuming it behaves ideally?

Question 2

A heat engine absorbs 2000 J of heat from a high-temperature reservoir and rejects 1500 J of heat to a low-temperature reservoir. What is the efficiency of the engine?

Question 3

A system undergoes a cyclic process. In one cycle, it absorbs 1200 J of heat from the surroundings and does 900 J of work. How much heat is expelled to the surroundings during the cycle?

Question 4

An ideal gas undergoes an adiabatic compression from an initial volume of 5.0 L to a final volume of 1.0 L. The initial pressure is 100 kPa and the ratio of specific heats $\gamma$ is 1.4. What is the final pressure of the gas?

Question 5

A Carnot refrigerator operates between a cold reservoir at 270 K and a hot reservoir at 330 K. If the refrigerator removes 500 J of heat from the cold reservoir, how much work is required to operate the refrigerator?