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Q.

A black body has a temperature of 2900 K. When it cools to a lower temperature, the wavelength corresponding to maximum intensity is found to increase by 4 microns. The temperature of the black body after cooling is (Wien’s displacement constant = 0.0029 mK)

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a

290 K

b

580 K

c

 967 K

d

725 K

answer is B.

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Detailed Solution

λmaxT=b(constant)

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