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A system absorb 600J of heat and work equivalent to 300J on its surroundings. The change in internal energy is

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A system absorb 600J of heat and work equivalent to 300J on its surroundings. The change in internal energy is

(1) 300 J 

(2) 400 J

(3) 500 J 

(4) 600 J

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1 Answer

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Best answer

Correct Answer is: (1) 300 J 

We know that
ΔE = Q + W = 600 + (-300) = 300 J
W= – 300, because the work done by the system.
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