If 50 calories are added to a system and system does work of 30 calories on surroundings, the change in internal energy of system is
A
20cal
B
50cal
C
40cal
D
30cal
Video Solution
Text Solution
The correct Answer is:A
q=ΔE+w
50=ΔE+30
∴ΔE=20cal
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Updated on:21/07/2023
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