Question

Define S.I. unit of solid angle?

CLASS - XI PHYSICS (Physical World & Measurement)

Answer 1

A steradian is 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=$r^{2}$

Answer 2

Ans:- steradian is the SI unit of solid angle.It means that the solid angle substended at a center of an unit, sphere by a unit area on the surface.

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