Question

Question-

~Define 1 Steradian.​

Answer 1

Answer:

The steradian (symbolized sr) is the Standard International (SI) unit of solid angular measure. There are 4 pi, or approximately 12.5664, steradians in a complete sphere. A steradian is defined as conical in shape, as shown in the illustration. Point P represents the center of the sphere.

Answer 2

heya mate:::

• angle at the centre of the sphere subtended by the part of a surface equal in area to the square of the radius..

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