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 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

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

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

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 of the same material having radii r and 4r and temperature 2T_(0) and T_(0) respectively. The ratio of rate of radiation of energy by the sphere is

Two spheres of the same material have radii 1m and 4m and temperatures 4000K and 2000K respectively. The ratio of the energy radiated per second by the first sphere to that by the second is

Two spheres of the same material have radii 1m and 4m and temperatures 4000K and 2000K respectively. The ratio of the energy radiated per second by the first sphere to that by the second is