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41. For a gas if ratio of specific heats at constant pressure and volume is γ then value of degrees of freedom is

(a) (3γ-1)/ (2γ-1)                                          (b) 2/(γ-1)

(c)  (9/2)(γ-1)                                                (d)  (25/2)(γ-1)      

Answer-b

(2)

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