black body has wavelength λm corresponding to maximum energy at 2000 K. Its wavelength corresponding to maximum energy at 3000 K will be:

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32λm

23λm

1681λm

8116λm

answer is B.

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Detailed Solution

λmT=constant ⇒λm(2000)=λ'm(3000) ⇒ λm'=23λm

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