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| 1. |
?Define S.I unit of solid angle? pls ans me. ??? |
| Answer» one streradian is defined as the angle made by a spherical plane of area 1square metre at the centre of a sphere of radius 1 m. ?<br>Steradian, unit of solid-angle measure in the International System of Units (SI), defined as the solid angle of a sphere subtended by a portion of the surface whose area is equal to the square of the sphere’s radius. Sin | |