2 Two plane mirrors AB and AC are inclined at an angle 0 20

Last updated: 6/14/2023

2 Two plane mirrors AB and AC are inclined at an angle 0 20 to each other A ray of light starting from point P is incident at point Q on the mirror AB then at R on mirror AC and again on S on AB Finally the ray ST goes parallel to mirror AC The angle i which the ray PQ makes with the normal at point Q on the mirror AB is 1 20 3 40 SB R BT 2 30 4 60