A) Internal energy will decrease
B) Internal energy will increase
C) Internal energy will become zero
D) Internal energy will remain same
Correct Answer: D
Solution :
For a process to be isothermal,-any heat flow into or out of the system must occur slowly enough, so that thermal equilibrium is maintained. Hence, in isothermal process, temperature during the whole process does not change \[i.e.,\] internal energy which is a function of temperature remains same throughout the process.
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