Thermodynamics - Result Question 30
31. A sample of gas expands from volume to . The amount of work done by the gas is greatest, when the expansion is
(a) adiabatic
(b) isobaric
(c) isothermal
(d) equal in all cases
[1997]
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Answer:
Correct Answer: 31. (b)
Solution:
- (b) In thermodynamics for same change in volume, the work done is maximum in isobaric process because in
graph, area enclosed by curve and volumeaxis is maximum in isobaric process.
(d) We know that in adiabatic process,
From ideal gas equation, we know that
Puttingt the value from equation (2) in equation (1),