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The figure below shows the variation of specific heat capacity (C) of a solid as a function of temperature (T). The temperature is increased continuousely form 0 to 500K at a constant rate. Ignorign any volume change, the following statement (s) is (are) correct to a reasonable approximation. A. The rate at which heat is absorbed in the range 0-100K varies linearly with temperature T.B. Heat absorbed in increasing the temperature from 0-100K is less than the heat required for increasing the temperature from 400-500K.C. There is no change in the rate of heat absorption in the range 400-500K.D. The rate of heat absorption increases in the range 200-300K. |
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Answer» Correct Answer - A::B::C::D (a,b,c,d) We know that `dQ=mCdT` in the range 0 to 100K From the graph, C increases linearly with temperature therefore the rate at which heat is absorbed varies linearly with temperature. Option (a) is correct As the value of C is greater in the temperature range `400- 500K,` the heat absorbed in increasing the temperature from `0-100K` is less than the heat required for increasing the temperature from `400-500K` option (b) is correct. From the graph it is clear that the value of C does not change in the temperature range `400-500K,` therefore there is no change in the rate of heat absorption in this range. Option (c) is correct. As the value of C increasing from `200-300K,` the rate of heat absorption increase in the range `200-300K.` Option (d) is also correct. |
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