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46. One mole of an ideal gas at an initial temperature of T K does 6 R joules of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is 5/3, the final temperature of gas will be

(a) (T+2.4)K                        (b) (T-2.4)K

(c)  (T+4)K                              (d) (T-4)K

Answer-d

(8)

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