A gas at initial temperature T undergoes sudden expansion from vo… - Vidyadip

MCQ

A gas at initial temperature $T$ undergoes sudden expansion from volume $V$ to $2 \,V$. Then,

✓
the process is adiabatic
B
the process is isothermal
C
the work done in this process is $n R T \ln _{e}(2)$, where $n$ is the number of moles of the gas
D
the entropy in the process does not change

✓

Answer

Correct option: A.

the process is adiabatic

a
$(a)$ In sudden expansion, time duration is small. Thus, heat does not leave or enter the gas mass.

Process of sudden expansion is adiabatic process, $\Delta Q=0$

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