If one mole of the polyatomic gas is having two vibrational modes and $ \beta $ is the ratio of molar specific heats for polyatomic gas $ \left(\beta=\frac{\mathrm{C}_{\mathrm{P}}}{\mathrm{C}_{\mathrm{v}}}\right) $ then the value of $ \beta $ is :

Question

If one mole of the polyatomic gas is having two vibrational modes and $ \beta $ is the ratio of molar specific heats for polyatomic gas $ \left(\beta=\frac{\mathrm{C}_{\mathrm{P}}}{\mathrm{C}_{\mathrm{v}}}\right) $ then the value of $ \beta $ is :, $ 1.02 $, $ 1.2 $, $ 1.25 $, 1. $ 35 $

MARKS App · Accepted Answer

f = 4 + 3 + 3 = 10 , assuming non-linear, β = C p C v = 1 + 2 f = 12 10 = 1 . 2

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