Advertisements
Advertisements
Question
Why does heat flow from a hot object to a cold object?
Advertisements
Solution
Because entropy increases when heat flows from a hot object to a cold object. If heat were to flow from a cold to a hot object, entropy will decrease leading to violation of second law thermodynamics.
APPEARS IN
RELATED QUESTIONS
Draw a p-V diagram and explain the concept of positive and negative work. Give one example each.
State Clausius form of the second law of thermodynamics.
Define heat engine.
State the second law of thermodynamics in terms of entropy.
Explain the heat engine and obtain its efficiency.
Explain in detail the Carnot heat engine.
For a heat engine operating between temperatures t1 °C and t2 °C, its efficiency will be ______.
The thermal efficiency of a heat engine is 25%. If in one cycle the heat absorbed from the hot reservoir is 50000 J, what is the heat rejected to the cold reservoir in one cycle?
What is a heat engine?
Mention any two elements of a heat engine.
