Consider the following processes:
I. Energy flows as heat from a hot object to a colder object
II.Work is done on a system and an equivalent amount of energy is
Rejected as heat by the system
III. Energy is absorbed as heat by a system and an equivalent amount
Of work is done by the system
Which are never found to occur?
A) Only I
B) Only II
C) Only III
D) Only II and III
E) I, II and III

Question

Quizplus · Accepted Answer

Energy being absorbed as heat by a system and an equivalent amount of work being done by the system (process III) would violate the second law of thermodynamics, as it implies 100% conversion of heat into work without any losses, which is not possible.

Consider the Following Processes