The sphere of radii 8 cm and 2 cm are cooling. Their temperatures are `127^(@)C` and `527^(@)C` respectively . Find the ratio of energy radiated by them in the same time

Two spheres P and Q of the same colour having radii 8 cm and 2 cm respectively are maintained at temperatures 127^@C and 527^@C respectively. Then the ratio of the energy radiated by Pand Q is

Two solid sphere of copper have radii 10 cm and 8 cm respectively. Their temperature are 227^@C and 127^@C respectively they are allowed to cool by radiation in a room of temperature 27^@C then the initial rates of heat loss are in the ratio

Two spheres P and Q of the same colour and having radii 4 cm and 2 cm are kept at 127^(@)C and 527^(@)C respectively. The ratio of the energies radiated by P and Q

Two spheres of the same material have radii 1m and 14m and are at temperature 4000 K and 2000 K respectively. What is the ratio of energy radiated by each of them ?

Two spheres of same material have radii 1m and 2m are at temperature of 2000K and 1000K respectively.The ratio of energy radiated in unit time is

Two spheres of same material have radii 1m and 2m are at temperature of 2000K and 1000K respectively.The ratio of energy radiated in unit time is