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The intensity of energy radiated by a ho...

The intensity of energy radiated by a hot body at distance r from it varies as .

A

`r^(2)`

B

`(1)/(r^(2))`

C

`(1)/(r^(4))`

D

`(1)/(r^(3))`

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The correct Answer is:
B
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NARAYNA-TRANSMISSION OF HEAT-C .U .Q
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  2. The temperature at which a black body ceases to radiate energy is .

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  14. At high temperature black body spectrum is .

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  15. A black body emits

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  16. The best laboratory approximation to an ideal black body is .

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  17. A black body does not .

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