Physics, asked by shashwatpila, 8 months ago

What solid angle will be subtended by a surface of area ds at a point distant r from it?

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Answered by hasini11449

1

Consider S be the area of surface subtended by the intersection of the sphere and the cone. The solid angle is defined Ω = (S/r²). This defines the solid angle in steradians. If the surface covers the entire sphere then the number of steradians is 4π...

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