Question

The plots of intensity versus wavelength of three black bodies at temperatures $T_1,T_{2}and{T}_3$ respectively are shown in figure. Their temperatures are such that

• A. > >
• B. > >
• C. > >
• D. > >

Answer 1

The correct option is B

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For black body radiations, ${\lambda }_m$ T = constant. It is clear from the figure that ${\lambda }_2$ >${\lambda }_3$ > ${\lambda }_1$. Hence, it follows that $T_1$ > $T_3$ > $T_2$, which is choice (b).