Advertisements
Advertisements
प्रश्न
Why does heat flow from a hot object to a cold object?
उत्तर
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
संबंधित प्रश्न
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.
What are the processes involves in a Carnot engine?
Explain in detail the Carnot heat engine.
Derive the expression for Carnot engine efficiency.
Explain the second law of thermodynamics in terms of entropy.
A Carnot engine whose efficiency is 45% takes heat from a source maintained at a temperature of 327°C. To have an engine of efficiency of 60% what must be the intake temperature for the same exhaust (sink) temperature?
Heat engine transfers ______.
Let η1 is the efficiency of an engine at T1 = 447°C and T2 = 147°C while η2, is the efficiency at T1 = 947°C and T2 = 47°C. The ratio `eta_1/eta_2` will be ______.
Mention any two elements of a heat engine.
