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A black body is at a temperature of 5760...

A black body is at a temperature of 5760 K. The energy of radiation emitted by the body at wavelength 250 nm is `U_(1)`, at wavelength 500 nm is `U_(2)` and at 1000 nm is `U_(3)`, Wien's constant, `b=2.88xx10^(6)` nm K, which of the following is correct ?

A

`U_(1)=0`

B

`U_(3)=0`

C

`U_(1)gtU_(2)`

D

`U_(2)gtU_(1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Maximum amount of emitted radiation
corresponding to `lamda_(n)=b/(T)`
`lamda_(n)=(2.88xx10^(6)"nmk")/(5760K)=500nm`
`therefore` U is maximum at 500 nm. Hence, `U_(2)gtU_(1)`
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