In the certain process, 400 cal of heat is supplied to a system and at the same time 105 J of mechanical work was done on the system. The increase in its internal energy is - VgyanHub

Question:

In the certain process, 400 cal of heat is supplied to a system and at the same time 105 J of mechanical work was done on the system. The increase in its internal energy is

Options :

(a) 20 cal
(b) 303 cal
(c) 404 cal
(d) 425 cal

Answer :

(d) 425 cal

Answer Steps :

step 1

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