Light incident normally on a plane mirror attached to a

Last updated: 6/21/2023

Light incident normally on a plane mirror attached to a galvanometer coil reflects backward as shown in figure A current in the produces a deflection of 3 5 of the mirror The displacement of the reflected spot of light on a screen placed 2m away is A m C 27 5 m 48 9 cm 24 5 cm D 12 2m 2m