Thermal Properties of Matter - Result Question 32
33. If $\lambda_m$ denotes the wavelength at which the radiative emission from a black body at a temperature $T K$ is maximum, then
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(a) $\lambda_m \propto T^{-1}$
(b) $\lambda_m \propto T^{4}$
(c) $\lambda_m$ is independent of $T$
(d) $\lambda_m \propto T$
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Answer:
Correct Answer: 33. (a)
Solution:
- (a) From Wein’s displacement law
$\lambda_m T=$ constant
$\Rightarrow \lambda_m \propto T^{-1}$
