20 The solid angle subtended by the periphery of an area 1

Last updated: 6/1/2023

20 The solid angle subtended by the periphery of an area 1 cm at a point situated symmetrically at a distance of 5 cm from the area is a 2x 10 2 steradian b 4x 10 2 steradian c 6 x 10 2 steradian d 8 x 10 2 steradian