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A black body has maximum wavelength lamd...

A black body has maximum wavelength `lamda_(m)` at 2000 K. Its corresponding wavelength at 3000 K will be . . . . . ..

A

`2/3lamda_(m)`

B

`3/2lamda_(m)`

C

`4/9lamda_(m)`

D

`9/4lamda_(m)`

Text Solution

Verified by Experts

The correct Answer is:
A
According to Wien.s law,
`lamda_(m)T=b" (constant)"`
`:.(lamda_(m))_(1)T_(1)=(lamda_(m))_(2)T_(2)`
`:.(lamda_(m))_(2)=((lamda_(m))_(1)T_(1))/(T_(2))`
`=(lamda_(m)xx2000)/(3000)`
`=2/3lamda_(m)`
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