If one mole of the polyatomic gas is having two vibrational modes and γ is the ratio of molar specific heats for polyatomic gas  γ=CPCV then the value of γ is:

 If one mole of the polyatomic gas is having two vibrational modes and γ is the ratio of molar specific heats for polyatomic gas  γ=CPCV then the value of γ is:

  1. A

    1.35

  2. B

    1.2

  3. C

    1.02

  4. D

    1.25

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    Solution:

    2 vibrational modes means 4 degree of freedom corresponding to vibration.

    degree of freedom n = 10(3 + 3 + 4)

    CpCv=γ=1+2n=1+210=1.2for   non  linear

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