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A solid material is supplied with heat a...


A solid material is supplied with heat at a constant rate. The temperature of the material is changing with heat input as shown
(i) AB: change of state from solid to liquid.
CD: change of state from liquid to vapour
(ii) When `CD=2AB`, i.e., latent heat of vapourization is twice the latent heat of fusion of the substance.
(iii) The reciprocal of slope of DE represents the heat capacity of vapour state of substance .
(iv) If slope of `OAgt`slope of BC, i.e., specific heat of liquid state is greater than specific heat that of solid state.

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A solid material is supplied with heat at a constant rate. The temperature of the material is changing with the heat input as shown in the graph in figure. Study the graph carefully and answer the following questions: (i) What do the horizontal regions AB and CD represent? If CD is equal to 2AB, what do you infer? What does the slope of DE represents? The slope of OAgtthe slope of BC. What does this indicate?

A solid material is supplied with heat at a constant rate. The temperature of the material is changing with the heat input as shown in the graph in figure. Study the graph carefully and answer the following questions: (i) What do the horizontal regions AB and CD represent? (ii) If CD is equal to 2AB, what do you infer? (iii) What does the slope of DE represents? (iv) The slope of OAgtthe slope of BC . What does this indicate?