Question

In the figure, A and B are two adiabatic curves for two different gases. Then A and B correspond to:

• A. Ar and He respectively
• B. He and $H_2$ respectively
• C. $O_2$ and $H_2$ respectively
• D. $H_2$ and He respectively

Answer 1

The correct option is B He and $H_2$ respectively

For adiabatic process

$p_{v}r=$ constant

$\gamma$ for monoatomic gas $=\frac{5}{3}$

$\gamma$ for diatomic gas $=\frac{7}{5}$

$\frac{5}{3}>\frac{7}{5}$

B curve corresponds to monoatomic and A curve diatomic