The plots of spectral radiancy Rλ versus wave length λ for three black bodies at temperatures T1, T2 and T3 respectively are shown. Their temperatures are such that
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a
T1 > T2 > T3
b
T1 > T3 > T2
c
T2 > T3 > T1
d
T3 > T2 > T1
answer is B.
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Detailed Solution
By Wien’s displacement Law, at maximum intensity λT= constant. Since λ1 < λ3 < λ2, we can conclude, T1 > T3 > T2.