Question

The $\nu_m - T$ curve for a perfect black body is -

($\nu_m \rightarrow$ frequency corresponding to maximum emission of radiation)

• A. A
• B. B
• C. C
• D. D

Answer 1

Answer: (B)

B

Answer 2

Wien's displacement law states that the frequency of maximum spectral radiance ($\nu_m$) is directly proportional to the absolute temperature ($T$). This relationship is expressed as $\nu_m = k T$, where $k$ is a constant. A direct proportionality between two variables is represented by a straight line passing through the origin on a graph. Therefore, the $\nu_m - T$ curve for a perfect black body is a straight line passing through the origin.