Question

A hot black body losses heat at the rate of 30 Jm^-2s ^-1 and its most intense radiation corresponds to 15,000 Å. When the temperature of this body is further increased then its most intense radiation corresponds to 7500 Å, then find the rate of loss of heat i. (Surrounding temperature is half of the initial temperature of black body):

(A)  480 Jm^-2s ^-1

(B)  30/17 Jm^-2s ^-1

(C)  510 Jm^-2s ^-1

(D)  495 Jm^-2s ^-1

Answer 1

Correct option  (C)  510 Jm^-2s ^-1

Explanation:

Wein's displacement law is,