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Wein's constant is $2892 \times {10^{ - 6}}$ MKS unit and the value of ${\lambda _m}$ from moon is 14.46 microns. What is the surface temperature of moon

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100 K

300 K

400 K

200 K

answer is D.

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Detailed Solution

${\lambda _m}T = 2892 \times {10^{ - 6}} \Rightarrow T = \frac{{2892 \times {{10}^{ - 6}}}}{{14.46 \times {{10}^{ - 6}}}} = 200\;K$

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