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For a black body at temperature 727^(@)C...

For a black body at temperature `727^(@)C`. If the temperature of the black body is changed to `1227^(@)C`, then its radiating power will be

A

304 W

B

320 W

C

240 W

D

120 W

Text Solution

Verified by Experts

The correct Answer is:
B
`60=K(1000^(4)-500^(4))....(i)`
`E=K(1500^(4)-500^(4)).....(ii)`
from (i) and (ii) `E/60 (1500^(4)-500^(4))/(1000^(4)-500^(4)) rArr E=320`
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