definition of steradian
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Answer:
the SI unit of solid angle, equal to the angle at the centre of a sphere subtended by a part of the surface equal in area to the square of the radius
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Answer:
Steradian or 1 steradian is the solid angle subtended by a part of the surface of a sphere at the centre of the sphere when the area of the part is equal to the square of the radius of the sphere.
Explanation:
The area of a spherical surface subtends an angle at the centre of the sphere. This angle is called the solid angle.
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