The plots of intensity versus wavelength for three black bodies at temperatures $ T_{1}, T_{2} $ and $ T_{3} $, respectively, are as shown. Their temperature are such that

Question

The plots of intensity versus wavelength for three black bodies at temperatures $ T_{1}, T_{2} $ and $ T_{3} $, respectively, are as shown. Their temperature are such that, $ T_{1}>T_{2}>T_{3} $, $ T_{1}>T_{3}>T_{2} $, $ T_{2}>T_{3}>T_{1} $, $ T_{3}>T_{2}>T_{1} $

MARKS App · Accepted Answer

Wavelengths corresponding to temperatures T 1 , T 2 and T 3 are λ 1 , λ 2 and λ 3 , respectively. From given graph, we can write, λ 2 > λ 3 > λ 1 . According to Wein's law, λ m T = constant Wavelength is inversely proportional to temperature. So, above relation can be written as T 1 > T 3 > T 2 .

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