Question

What is thr effect on the rate of radiation when absolute temperature of black body is doubled?

Answer 1

Yes the radiated heat is directly proportional to the 4th power of temperature then

Q=T^4

When, T'= 2T

Then Q proptional T^4

Then Q =(2T)^4 =16T^4

Radiation increases by 16 times

Answer 2

All objects with a temperature above absolute zero (0 K, -273.15 oC) emit energy in the form of electromagnetic radiation. A blackbody is a theoretical or model body which absorbs all radiation falling on it, reflecting or transmitting none.