Q.

If the maximum intensity of radiation for a black body is found at 2.65µm, the tempera-ture of the surface of radiating body is  (Wien’s constant = 2.9×10–3 mK)

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a

927 K

b

1094 K

c

2027 K

d

2173K

answer is B.

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Detailed Solution

λT = b ⇒ 2.65 x 10-6 x T = 2.9 x 10-3T = 1094k
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