Which of the following is the unit of Solid Angle?

Q. Which of the following is the unit of Solid Angle?
Answer: steradian
Notes: Steradian is the unit of Solid Angle (Angle in Space). One steradian is defined as the solid angle of a sphere subtended at the centre of a sphere by that surface of the surface whose area is equal to the square of the sphere’s radius. Its symbol is sr.

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