Q.

A system absorbs 200 J of heat and  700 J of work is done by the system. Change in internal energy for the process is

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answer is 2.

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Detailed Solution

Heat absorbed by system = +veWork done on the surrounding(or) Work done by the system = -veΔU=+200−700JΔU=−500J
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A system absorbs 200 J of heat and  700 J of work is done by the system. Change in internal energy for the process is