1.

If the temperature of the hot body is increased by 50% the amount of radiation emitted is increased by nearly :

Answer»

`50%`
`225%`
`250%`
`400%`

Solution :`(E_(2))/(E_(1))=((150)/(100))^(4)=5*06`
`rArr""(E_(2))/(E_(1))-1=5*06-1`
`(E_(2)-E_(1))/(E_(1))xx100=4*06xx100=400%`
Thus correct choice is (d).


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