A metal cylinder of mass `0.5kg` is heated electrically by a `12 W` heater in a room at `15^(@)C` The cylinder temperature rises nuniformly to `25^(@)C` in 5 min and finally becomes constant at `45^(@)C` Asuming that the rate of heat loss is proporational to the excess temperature over the surroundings .
A. The rate of loss of heat of the cylinder to surrounding at `20^(@)C` is `2W` .
B. The rate of loss of heat of the cylinder to surrounding at `45^(@)C` is `2W` .
C. Specific heat capacity of metal is `(240)/(In(3//2))J//kg^(@)C`
D. None of these