Question

if a heat engine attains 100% efficiency, then it is a. zeroth law b. i law c. ii law d. no e. all

Answer 1

i think the correct answer is D

because any system can not be 100% efficient.

There is always loss of energy

Answer 2

Actually the answer is option d since no engine attains 100% efficiency importantly heat engine doesn’t reach 100%.

Since the highest efficiency of the heat engine depends upon the heat source and heat sink the heat will flow in the conventional manner so there will be rising in temperature in heat sink.