# NEET Physics Thermodynamics Questions Solved

P-V diagram of a diatomic gas is a straight line passing through origin. The molar heat capacity of the gas in the process will be -

(1) 4 R

(2) 2.5 R

(3) 3 R

(4) $\frac{4R}{3}$

(3) P-V diagram of the gas is a straight line passing through origin. Hence $P\propto V$ or $P{V}^{-1}=$ constant

Molar heat capacity in the process

$C=\frac{R}{\gamma -1}+\frac{R}{1-x}$; Here $\gamma =1.4$ (For diatomic gas)

$C=\frac{R}{1.4-1}+\frac{R}{1+1}$$C=3R$

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