Thermodynamic Processes
Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): In an insulated container, a gas is adiabatically shrunk to half of its initial volume. The temperature of the gas decreases.
Reason (R): Free expansion of an ideal gas is an irreversible and an adiabatic process. In the light of the above statements, choose the correct answer from the options given below:
Show answer and solution
Answer: (c)
- Adiabatic compression: , work is done on the gas, so and temperature rises. (A) is false.
- Free expansion happens suddenly with no heat exchange and cannot be reversed: irreversible and adiabatic. (R) is true.
- So the answer is (c).