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

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 materical have radii 1m and 4m and temperature 400K and 2000K respectively The ratio of the energy radiated per second by the first sphere to that by the second is .

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