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Q.

During a process work equivalent to 400J is done on a system, which gives out of 125J of energy. The change in internal energy is

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a

200J

b

525J

c

375J

d

275J

answer is C.

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Detailed Solution

Work done on a system means +W , W=+400

Energy gives out means −Q 

Q=−125

ΔE=+W−Q=400−125=275

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