InterviewSolution
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InterviewSolution
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A balloon containing an ideal gas has a volume of `10 litre` and temperature of `17^(@)`. If it is heated slowly to `75^(@)C`, the work done by the gas inside the balloon is (neglect elasticity of the balloon and take atmospheric pressure as `10^(5)` Pa)A. `100 J`B. `200 J`C. `250 J`D. data insufficient |
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Answer» Correct Answer - B Since elasticity of balloon is negligible, pressure inside balloon pressure outside balloon = `P_(atm)` `:. W = P_(atm) DeltaV` `V_(i n) = 10 litre` `(V_(i n))/(T_(i n)) = (V_(fi n))/(T_(fi n) ) implies V_(fi nal) = ((V_(i n)T_(fi nal))/(T_(i n))) litre` `implies W = P_(atm) V_(i n) ((T_(f i nal))/(T_(i n))-1)` ltbr gt`implies 10^(5)xx10^(-2)(58/290)= 200J`. |
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