69.Assuming sun to have spherical outer surface of radius 'r', radiating like a black body at temperature t^0C, the power received by a unit surface at a unit distance R normal to the Ray's from the centre of the sun is ?

69.Assuming sun to have spherical outer surface of radius 'r', radiati

1.	69.Assuming sun to have spherical outer surface of radius 'r', radiating like a black body at temperature t^0C, the power received by a unit surface at a unit distance R normal to the Ray's from the centre of the sun is ?
Answer» 69.Assuming sun to have spherical outer surface of radius 'r', radiating like a black body at temperature t^0C, the power received by a unit surface at a unit distance R normal to the Ray's from the centre of the sun is ?

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69.Assuming sun to have spherical outer surface of radius 'r', radiating like a black body at temperature t^0C, the power received by a unit surface at a unit distance R normal to the Ray's from the centre of the sun is ?

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