The maximum wavelength of radiation emitted from the sun at 6000 K is about 550 nm. What would be the wavelength of maximum radiation emitted from the earth at `27^(@)C` ?

Options

A. `22mum`
B. `33mum`
C. `11mum`
D. `44mum`

Answer

C

Explanation

`(lamda_(m))_(1)T_(1)=(lamda_(m))_(2)T_(2)`
`thereforelamda_(2)/lamda_(1)=T_(1)/T_(2)=6000/300=20`
`thereforelamda_(2)=20`
`lamda_(1)=20xx550xx10^(-9)=11xx10^(3)xx10^(-9)m=11mum`