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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 continuously form 0 to 500K at a constant rate. Ignoring 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 linerly with temperature `T`.B. heat absorbed in increasing the temperature from `0 -100K` is less than the heat required for increasing the temperature form `400-500K`.C. there is no change in the rate of heat absorbtion in the range `400-500K`.D. the rate of heat absorption increase in the range `200-300K`. |
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Answer» Correct Answer - B::C::D `q = mCT, (dq)/(dt) = mc (dT)/(dt)` `R =` rate or absortion of heat `= (dq)/(dt) prop C` (i) in `0 - 100k C` increases, so `R` increases but not lineraly (ii) `Deltaq = mCDeltaT` as `C` is more in `(400k - 500k)` then `(0-100k)` so heat is increasing. (iii) `C` remains constant so there no change in `R` from `(400k - 500k)` (iv) `C` is increases so `R` is increases in range `(200 k - 300k)` |
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