Question

When the pressure of a gas is increased keeping its volume constant:

A.the work done is a measure of the sum of the change in intrernal energy and the heat added.

B.	the work done is a measure of the heat added.

C.	the work done is a measure of the change in internal energy of the gas.

D.	the work done is zero.

Answer 1

we knwo that the process which is taking place by keeping volume constant so that the system changing its state from one to other is called isochoric process

the work done W = P(DV )  

W = dP (0) = 0

from first law of thermodynamics  

dQ = dU +dW

dQ = dU + 0

so the work done is Zero  

what ever the heat supplied to the system results the change in internal energy only , no work will be done

so the answer is D

the work done is zero