Question

a gas is heated at constant volume what fraction of heat is converted to work? (a) 1​

Answer 1

The fraction of heat, converted to work is zero

Explanation:

Given: A gas is heated at constant volume

To find out: The fraction of heat that is converted to work

Solution:

Since the gas is heated at constant volume

The process is isochoric process

The initial volume $(V_i)$ will be equal to the final volume $(V_f)$

Thus,

$V_i=V_f$

Change in volume $\Delta V=0$

Therefore, the work done

$W=PdV=P\times 0=0$

In fact the whole heat will be absorbed to increase the internal energy of the system.

Hope this answer is helpful.

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