Question

Two vertical plane mirrors are inclined at an angle of
with each other. A ray of light travelling horizontally is reflected first from one mirror and then from the other. The resultant deviation is

Answer 1

Answer:

the net deviation is equal to deviation while 1st reflection +deviation while 2nd reflection

the d net=d1+d2

=180-2I'+180-2I''

here I' is incident angle of 1st reflection and I'' is incident angle of second reflection..

hope so helpful..