InterviewSolution
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InterviewSolution
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In an isothermal expansion change in internal energy and work done by the gas are respectivelyA. (-) ve, (-) veB. 0, (+) veC. 0, (-) veD. (+) ve, (-) ve |
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Answer» Correct Answer - B change in internal energy is 0 because internal energy depends on temperature. work done by gas can be + or- depending on whether the process is reversible or irreversible. work done by gas is equivalent to area under curve of p/v graph Correct option is: 0, (+) ve We know that, an isothermal expansion temperature is constant. So, change internal energy ∆u = ncv ∆T ∵ ∆T = 0 ∆u = 0 work done will be positive because work done by the gas. ∆W = +ve |
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