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HomePhysics32. A system is provided with 200 cal of heat and the work done by the system on the surrounding is 40 J. Then its internal energy

32. A system is provided with 200 cal of heat and the work done by the system on the surrounding is 40 J. Then its internal energy

(a)  Increases by 600 J            (b)  Decreases by 800 J

(c)   Increases by 800 J            (d)  Decreases by 50 J

Ans. c

(11)

5/5 - (3 votes)

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12. An ideal gas is taken through the cycle A→ B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

(a)      – 5 J (b)  – 10 J (c)   – 15 J (d)  – 20 J Answer-a (126)

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