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A heated body emits radiation which has ...

A heated body emits radiation which has maximum intensity at frequency `v_(m)`. If the temperature of the body is doubled :

A

the maximum intensity radiation will be at frequency `2v_m`

B

the maximum intensity radiation will be at frequency `(1//2)v_m`

C

the total emitted energy will increae by a factor of 16

D

the total emitted energy will increase by a factor of 2

Text Solution

Verified by Experts

The correct Answer is:
A, C
Accoding to Wien's law
`lamda_mT=constant`
or `(T)/(v_m)=constant`
So, if T is doubled `v_m` is also doubled Further, according to Stefan's law,
`EpropT^4`
When T is doubled, E increases by a factor of 16.
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