InterviewSolution
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InterviewSolution
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Consider a heat engine as shown in (figure). `Q_(1) and Q_(2)` are heat added to heat bath `T_(1)` and heat taken from `T_(2)` one cycle of engine. `W` is the mechanical work done on the engine. If `Wgt0`, then possibillities are:A. `Q_(1) gt Q_(2) gt 0`B. `Q_(2) gt Q_(1) gt 0`C. `Q_(2) lt Q_(1) lt 0`D. `Q_(1) lt 0,Q_(2) gt 0` |
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Answer» Correct Answer - A::C (figure). Represents the working of a refrigerator, wherein `Q_(1)= Q_(2)+W` If `W gt 0, Q_(1) gt 0`. Both `Q_(1)` and `Q_(2)` are positive. If `Q_(2)` is negative, `Q_(1)` is also negative (but less negative as `W gt 0`). `:. Q_(2) lt Q_(1) lt 0` Choices (a) and (c ) are corrcet. |
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