Heat and Thermal ExpansionMedium
Question
Which of the following graph shows the correct variation in intensity of heat radiations by black and frequency at a fixed temperature :-
Options
A.

B.

C.

D.

Solution
According to Wien′s law
λm ∝ 1/T ⇒ vm ∝ T.
As the temperature of body increases, frequency corresponding to maximum energy in radiation (vm) increase. Also area under the curve
Evdv ∝ T4
λm ∝ 1/T ⇒ vm ∝ T.
As the temperature of body increases, frequency corresponding to maximum energy in radiation (vm) increase. Also area under the curve
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