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A black body is at 727^(@)C. It emits en...

A black body is at `727^(@)C`. It emits energy at a rate which is proportional to

A

`(1000)^4`

B

`(1000)^2`

C

`(727)^4 `

D

`(727)^2`

Text Solution

Verified by Experts

The correct Answer is:
A
Rate of energy radiated by a black body (using Stefan.s law).
`P = (dW)/(dt) = sigma T^4` (T must be in Kelvin)
`prop (727 + 273)^4`
` P prop (1000)^4`
` P prop (1000)^4`
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