Heat given to a system is 35 joules and work done by the system is 15 – McqOptions

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1.	Heat given to a system is 35 joules and work done by the system is 15 joules. The change in the internal energy of the system will be [MP PET/PMT 1988]
A.	? 50 J
B.	20 J
C.	30 J
D.	50 J
Answer» C. 30 J

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