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A system has internal energy equal to U....

A system has internal energy equal to U. 600 J of work is done on the system when 450 J of heat is lost. The final energy of system is

A

U + 1050 J

B

U - 150 J

C

U + 150 J

D

U-1050 J

Text Solution

Verified by Experts

The correct Answer is:
C
`w=+600 J" "q=-450 J`
`Delta U=U_(2)-U_(1)=q+w`
`therefore U_(2)=U_(1)+(-450)+600`
`therefore U_(2)=U_(1)+150 J =(U+150) J`
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