P-V plots for two gases during adiabatic processes are shown in the figure. Plots 1 and 2 should correspond respectively to [2001]

Question

Smart Achievers · Accepted Answer

(2)

$For adiabatic process P V^{γ} = constant$

Also for monoatomic gas like helium, $γ = 1.67$

for diatomic gas like oxygen, $γ = 1.4$

Since, $γ_{diatomic} < γ_{monoatomic}$

$∴$ $P_{diatomic} > P_{monoatomic}$

Hence graph 1 is for diatomic i.e., oxygen and graph 2 is for monoatomic i.e., for helium.

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