Home Physics Thermodynamics All Topic Question for Revision Test The internal energy of a system could be cha…
Physics Thermodynamics All Topic Question for Revision Test MCQ (Single Correct)

The internal energy of a system could be changed

A
by extracting heat from the system.
B
by doing work done on the system.
C
if system do some work on the surroundings.
D
All of the above

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The correct answer is:
D

Heat and work are two distinct modes of energy transfer to a system that results in change in its internal energy. Thus, either by extracting heat or doing work on the system or if work is done by the system on the surroundings, the internal energy of the system can be changed.

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