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19. One gm mol of a diatomic gas (γ=1.4) is compressed adiabatically so that its temperature rises from 27°C to 127°C . The work done will be

(a)  2077.5 joules                    (b)  207.5 joules

(c)   207.5 ergs                         (d)  None of the above

Answer-a

(18)

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