Advertisements
Advertisements
प्रश्न
Why does heat flow from a hot object to a cold object?
Advertisements
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
Answer in brief:
A gas contained in a cylinder surrounded by a thick layer of insulating material is quickly compressed has work been done?
The figure shows the V-T diagram for one cycle of a hypothetical heat engine which uses the ideal gas. Draw the p-V diagram diagram of the system.
The efficiency of a heat engine working between the freezing point and boiling point of water is ____________.
State Kelvin-Planck's statement of the second law of thermodynamics.
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?
What is a heat engine?
Mention any two elements of a heat engine.
