A spherical black body of radius r radiated power `P` at temperature T when placed in surroundings at temprature `T_(0) (lt ltT)` If `R` is the rate of colling .

A spherical black body of radius n radiates power p and its rate of cooling is R. then.

A spherical black body of radius n radiates power p and its rate of cooling is R. then.

The rate at which a black body emits radiation at a temperature T is proportional to

A spherical black body of radius 12 cm radiates 450 W power at 500 K. If the radius is reduced to half and temperature is doubled. find the power- radiated in watt.

The total radiative power emitted by spherical blackbody with radius R and temperature T is P. If the radius if doubled and the temperature is halved then the radiative power will be -