Thermodynamics Question 26
Question: During the adiabatic expansion of 2 moles of a gas, the internal energy was found to have decreased by 100 J. The work done by the gas in this process is
[MP PET 1996, 97]
Options:
A) Isothermal change
B) Adiabatic change
C) Isobaric change
D) Isochoric change
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Answer:
Correct Answer: B
Solution:
In adiabatic change Q = constant
Therefore DQ = 0 So DW = - DU (Q DQ = DU + DW)
