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Q. If ΔU and ΔW represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true?

AIPMTAIPMT 2010Thermodynamics

Solution:

ΔU=q+W
for an adiabatic process, q=0
ΔU=W
i.e; increase or decrease in Internal energy is equal to work done.