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The ratio of the rate of radiation of he...

The ratio of the rate of radiation of heat by a perfectly black body at a temperature `527^(@)C` and `127^(@)C` is

A

`16:1`

B

`4:1`

C

`2:1`

D

cannot be found as the temperature of the surroundings is not known

Text Solution

Verified by Experts

The correct Answer is:
A
`(R_(2))/(R_(1))=(T_(2)^(4))/(T_(1)^(4))=((800)/(400))^(4)=(16)/(1)`
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