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If specific ehat capacity of a substance in solid and liquid state is proportional to temperature of the substance, then if heat is supplied to the solid intially at `-20^(@)C` (having melting `0^(@)C`) at contant rate. Then the temperature dependence of solid with time will be best represented by:A. B. C. D. |
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Answer» As `dQ=msdT` `(dQ)/(dt)=ms(dT)/(dt)` From question `SpropT` or `S=K_(1)T.(K_(1)` being propertionality constant) Also, `(dtheta)/(dt)="constant"=K_(2)("say")impliesms(dT)/(dt)=K_(2)impliesm(K_(1)T)(dT)/(dt)=K_(2)` `implies(m(K_(1))/(K_(2)))(T^(2))/(2)=timpliesT-propsqrt(t)` |
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