The rate of cooling of a body is ....

The rate of cooling of a body is .

independent of the nature of the surface of the body

independent of the area of the body

dependent on the excess of temperature of the body above that of the surroundings .

independent of the temperature of the surroundings

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A body cools at the rate of 3^(@)C// min when its temperature is 50^(@)C . If the temperature of surroundings is 25^(@)C then the rate of cooling of the body at 40^(@)C is

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NARAYNA-TRANSMISSION OF HEAT-C .U .Q

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