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Define SI unit of solid angle ? |
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Answer» A\xa0steradian\xa0is the SI unit of solid angle.It can be defined as the solid angle substended at a center of an unit, sphere by a unit area on its surface.For a general sphere of radius r, any portion on its surface with area A= One steradian is defined as the angle made by a spherical plane of area 1 square meter at the centre of the sphere of radius 1m. |
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