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A solid of constant heat capacity 1J"/"^(@)C is being heated by keeping it in contact with reservoirs in two ways : (i) Sequentially keeping in contact with 2 reservoirs such that each reservoir supplies same amount ofheat. (ii) Sequentially keeping in contact with 8 reservoirs such that each reservoir supplies same amount of heat. In both the cases body is brought from initial temperature 100^(@)C to final temperature 200^(@)C. Entropy change of the body in the two cases respectively is: |
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Answer» IN2, In2 Case (ii) `int dS =C [overset(385.5)underset(373)int (dT)/(T)+overset(398)underset(385.5)int (dT)/(T)+overset(410.5)underset(398)int (dT)/(T) +overset(423)underset(410.5)int (dT)/(T)` `overset(435.5)underset(423)int (dT)/(T)+overset(448)underset(435.5)int (dT)/(T)+overset(460.5)underset(448) int (dT)/(T)+overset(473)underset(460.5)int (dT)/(T)]=" In (473/373)"` None of the choice is correct. If GIVEN TEMPERATURE are in Kelvin then answer will be (a). |
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