Compare rates of loss of heat by the body at temperature `527^@C` and `127^@C`. Temperatue of surrounding is `27^@C`.

Compare the rate of loss of heat from a metal sphere at 827^@C with the rate of loss of heat from the same sphere at 427^@C , if the temperature of the surrounding is 27^@C .

A metal sphere cools at the rate of 1.6^@C//min when itstemperature is 60^@C . At what rate will it cool when its temperature is 50^@C ? The temperature of surroundings is 30^@C .

A metal sphere cools at the rate of 1.6^@ C /min when its temperature is 70^@ C . At what rate will it cool when its temperature is 40^@ C. The temperature of surroundings is 30^@ C.

Rates of emission of heat by perfectly black body maintained at temperatures 27° C and 927° C are in ratio

Compare the rates of emission of heat by a black body maintained at 727^@C and at 227^@C , if the black bodies are surrounded by an enclosure (black) at 27^@C . What would be the ratio of their rates of loss of heat.

A body cools at the rate of 4^@C per minute when its temperature is 70^@C . What will be its rate of cooling when its temperature is 50^@C ? (Assume temperature of surrounding to be 30^@C )

Compare the rate of emission of heat by a black body at 327^@C with the rate of emission of heat of same body at 27^@C .

The temperature of a body falls from 50^(@)C to 40^(@)C in 10 minutes. If the temperature of the surroundings is 20^(@)C Then temperature of the body after another 10 minutes will be