Question

In the figure, the distribution of energy density of the radiation emitted by a block body at a given temperature is shown. The possible temperature of the black body is

• A. $1500K$
• B. $2000K$
• C. $2500K$
• D. $3000K$

Answer 1

The correct option is B $2000K$

$\begin{array}{c}{\lambda }_{m}T=b\\ Whereb=2.89\times {10}^{-3}mK\\ \Rightarrow T=\frac{b}{{\lambda }_m}=\frac{2.89\times {10}^{-3}}{1.5\times {10}^{-6}}\\ \approx 2000K\end{array}$