The graph, shown in the adjacent diagram, represents the variation of temperature (T) of two bodies, x and y having same surface area, with time (t) due to the emission of radiation. Find the correct relation between the emissivity and absorptivity power of the two bodies

The graph shown in the adjacement diagram represents the variation of temperature (T) of two bodies x and y having the same surface area, with time (t). Both of these bodies lose heat only due to the emission of radiation. Find the correct relation between the emissive and absorptive power of the two bodies.

Two bodies A and B having equal surface areas are maintained at temperatures 10^(@)C . And 20^(@)C . The thermal radiation emitted in a given time by A and B are in the ratio

If the rate of emission of radiation by a body at temperature TK is E then graph between log E and log T will be .

Which of the following x-t graphs represents the distance-time variation of a body released from the top of a buiding?

At a given temperature the ratio between emissive power and absorptive power is same for all bodies and is equal to the emissive power of black body This statemetn is called .

If at temperature T , the emissive power and absorption power of a body for wave length are e_(lambda) and a_(lambda) respectively, then-

The energy of 6000 J is radiated in 10 minutes by a body of surface area 200 cm^(2) . Find the emissive power of the body.

Two bodies of same shape, same size and same radiating power have emissivities 0.2 and 0.8. The ratio of their temperatures is

Two bodies of same shape, same size and same radiating power have emissivities 0.2 and 0.4 The ratio of their temperature is .