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Question

Which of the following is constant in an isochoric process


A
pressure
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B
volume
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C
temperature
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D
none of these
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Solution

The correct option is B volume

Isochoric 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 $$ dW=P.dV=0 $$  and

The 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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