Question

A gas, is heated at constant pressure. The fraction of heat supplied used for external work is

• A. $\frac{1}{\gamma}$
• B. $\left( 1 - \frac{1}{\gamma} \right)$
• C. $\gamma - 1$
• D. $\left( 1 - \frac{1}{\gamma^{2}} \right)$

Answer 1

Answer: (B)

$\left( 1 - \frac{1}{\gamma} \right)$

Answer 2

We know fraction of given energy that goes to increase the internal energy $= \frac{1}{\gamma}$

So we can say the fraction of given energy that supplied for external work $= 1 - \frac{1}{\gamma}$.