Two plane mirror A and B are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle 30° at a point just inside one end of A. The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflection (including the first one) before it emerges out is
Attachments:
Answers
Answered by
5
According to laws of reflection
∠i=∠r
So,
∠PQO=30 deg
Given,
PQ=0.2m
tanθ=
OP/pq
1/root3=op/0.2
Op=0.2/root3
OP is the distance covered by the ray on one rflection.
Number of times the ray undergoes reflection, before it emerges out 2root3/(0.2/root3)
=2*root3*root3/0.2
=30 plz refer diagram given below
Edit 1-if ANYONE misUSING MY ANSWER AND TYPING IN THIS QUSESTION WILL BE REPORTED BY ME
HOPE U GOT it
Attachments:
Answered by
0
Answer: 30 times
Explanation:
Attachments:
Similar questions