Advertisements
Advertisements
प्रश्न
State the second law of thermodynamics in terms of entropy.
उत्तर
“For all the processes that occur in nature (irreversible process), the entropy always increases. For reversible process entropy will not change”. Entropy determines the direction in which natural processes should occur.
APPEARS IN
संबंधित प्रश्न
Draw a p-V diagram and explain the concept of positive and negative work. Give one example each.
The efficiency of a heat engine working between the freezing point and boiling point of water is ____________.
Define heat engine.
What are the processes involves in a Carnot engine?
Why does heat flow from a hot object to a cold object?
For a heat engine operating between temperatures t1 °C and t2 °C, its efficiency will be ______.
A heat engine operates between a cold reservoir at temperature T2 = 400 K and a hot reservoir at temperature T1. It takes 300 J of heat from the hot re ervoir and delivers 240 J of heat to the cold reservoir in a cycle. The minimum temperature of the hot reservoir has to be ______ K.
Which statement is incorrect?
What is a heat engine?
Mention any two elements of a heat engine.