A sample of gas expands from volume 'V_1' to 'V_2'. The amount of work done by the gas is maximum when the expansion is

MHT CET 2022 Physics question

A sample of gas expands from volume 'V' to 'V'. The amount of work done by the gas is maximum when the expansion is

(A)adiabitic
(B)equal in isothermal and isobaric
(C)isothermal
(D)isobaricCorrect

Answer: (D)

Solution

Work done by the gas equals the area under the - curve from to , starting from the same initial state. During expansion at constant pressure (isobaric) stays at its initial, highest value, so is the largest area. In an isothermal expansion falls

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Question ID VK-094250