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The spectral emissive power E(lambda) fo...

The spectral emissive power `E_(lambda)` for a body at temperature `T_(1)` is poltted againist the wavelenght and area under the curve is found to be `9A.At` a different temperature `T_(2)` the area is found to be A then `lambda_(1)//lambda_(2)=`
.

A

3

B

`1//3`

C

`1//sqrt3`

D

`sqrt3`

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The correct Answer is:
D
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