A spherical solid blakc body of radius 'r' radiates power 'H' and its rate of cooling is 'C'. If density is constant then which of the following is/are true.

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.

A hot metallic sphere of radius r radiates heat. It's rate of cooling is

A spherical black body is of radius 'r'. Its radiating power is 'P' and its rate of colling is R. Then a) Palphar b) Palphar^(2) c) Ralpha1//r

A spherical black body of radius r radiates power P , and its rate of cooling is R (i) P prop r (ii) P prop r^(2) (iii) R prop r^(2) (iv) R prop (1)/(r)

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 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.