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InterviewSolution
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Con teet ts6le |
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Answer» Any material starts burning when it’s temperature reaches a fixed value. The temperature at which the material starts burning is called ignition point. This value is different for different materials. If heat is supplied to a material, it’s temperature increased. But if it is taken away at the same time the material temperature does not increase or increases very slowly. When a paper cup is heated and there is water in it, the heat received by the material of the cup is transferred to the water inside. Thus the material of the cup and the water in it get heated simultaneously. If the ignition point of the paper is greater than the boiling point of water, water boils and the paper cup does not get ignited. |
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