A cylindrical rod of heat capacity `120 J//K` in a room temperature `27^(@)C` is heated internally
Channel: Doubtnut
Date: 2020-07-26

A cylindrical rod of heat capacity `120 J//K` in a room temperature `27^(@)C` is heated internally by heater of power `250W`, The steady state temperature attained by the rod is `37^(@)C`. Fin the following:  (a) The initial rate of increse in temperature  (b) The steady state rate of emission of radiant heat.  If the heater is switched off, find  (c) The initial rate of decrease is temperature  (d) The rate of decrease in temperature of the cylinder when its temperature falls to `31^(@)C` and  (e) The maximum amount of heat lost by the cylinder