Unit of solid angle is

Q. Unit of solid angle is

A

Degree

B

Radian

C

Steradian

D

Radian second

Solution:

The SI unit of solid angle is the steradian (sr).
The solid angle of a complete sphere is 4p sr.
The solid angle corresponding to the face of a cube measured at the centre is 2p/3 sr.
One steradian is equal to (180/p)2 square degrees.

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