Question

Wein's constant is 2892 × 10^-6 SI unit and the value of λm for moon is 14.46 micron. The surface temperature of moon is ______.

Options

• 100 K

• 300 K

• 400 K

• 200 K

Answer 1

Wein's constant is 2892 × 10^-6 SI unit and the value of λm for moon is 14.46 micron. The surface temperature of moon is 200 K.

Explanation:

Wein's law

λ_mT = b 

T = `"b"/lambda_"m"`

= `(2892xx10^-6)/(14.46xx10^-6)`

= 200 K