Question

Which of the following values are incorrect for the cyclic process? dU=0q=−WdH=0W=31.4 J

Solution

The correct option is D W=31.4 JSince it is a cyclic process, and internal energy is a state function, hence dU=0, for the same reason, dH=0. Also from the first law of thermodynamics, q=ΔU+(−W)⇒q=−W Also, W = area covered by sphere = πr2 =π[(V2−V1)2]2=π×(20)222=100π=100×3.14=314 J

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