Question

Which of the following situations would violate the second law of

thermodynamics?
A. A heat engine using heat to do work
B. A heat engine losing some energy as heat
C. A heat engine feeling cold after running for an hour
D. A heat pump being 80% efficient

Answer 1

Option C violates the second law of thermodynamics because it requires heat to transfer from a colder environment to a warmer environment.

Step-by-step explanation:

The second law of thermodynamics states that heat transfer occurs spontaneously from higher-temperature bodies to lower-temperature bodies, but not in the reverse direction.

Out of the given situations, only option C violates the second law of thermodynamics. A heat engine feeling cold after running for an hour would require heat to transfer from a colder environment to a warmer environment, which contradicts the second law.