Question

# Which of the following is constant in an isochoric process

A
pressure
B
volume
C
temperature
D
none of these

Solution

## The correct option is B volumeIsochoric process is the process that occurs at constant volume. In other words the change in volume is zero.  $$\Delta V=0$$Thus, the work done in an isochoric process $$dW=P.dV=0$$  andThe heat supplied during the process $$dQ=dU=n \ C_{v} \ \Delta T$$.Thus, in an isochoric process, we see that the volume is constant and work done is zero. There is only a change in the internal energy of the gas.Physics

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