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  1. The following figure was generated from experimental data relating spectral black body emissive power to wave length at the three temperatures T1, T2 and T3 (T1 > T2 >T3).

    The conclusion in that the measurements are
    1. correct because the maxima in E show the correct trend
    2. correct because planck's law is satisfied
    3. wrong because the Stefan Boltzmann law in not satisfied
    4. wrong because Wien's displacement law is not satisfied
Correct Option: D

Wien's displacement law is not satisfied, i.e., λmax T = C
which tells lower λmax for higher temperature.



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