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Assuming the sun to be a spherical body ...

Assuming the sun to be a spherical body of radius R at a temperature of T,K, evaluate the total radiant power, incident on earth, at a distance r from the sun. (`r_(0)` is the radius of the earth and `sigma` is stefan's constant)

A

`(R^(2) sigma T^(4))/( r^(2) )`

B

`( 4pir_(0)^(2) R^(2) sigma T^(4) )/( r^(2) )`

C

`( pi r_(0)^(2) R^(2) sigma T^(4) )/( r^(2) )`

D

`( r_(0)^(2) R^(2) sigma T^(4) )/( 4pir^(2) )`

Text Solution

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The correct Answer is:
C
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