Which of the following graphs shows the correct variation in intensity of heat radiations by black body and frequency at a fixed temperature
.

Options

A.
B.
C.
D.

Answer

C

Explanation

According to Wien's law `lambda_(m) prop (1)/(T) rArr v_(m) prop T`
As the temperature of body increases, frequency corresponding to maximum energy in radiation `(lambda+_(m))` increases. Also under the curve `int E_(v) dv prop T^(4)` .