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The variation of temperature of a materi...

The variation of temperature of a material as heat is given to it at a constant rate is shown in the figure. The material is in solid state at the point O. The state of the material at the point P is…..

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`AB` represents a process when physical state changes from solid to liquid and the temperature remains unchaged. Since `P` is a point between `A` and `B` the material is partly solid and partly liquid.
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