wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A light source lies at the angle bisector of two plane mirrors inclined at an angle of θ. The limitation for the value of θ so that the light reflected from one mirror does not reach the other mirror will be

A
θ120
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
θ90
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
θ120
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
θ60
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C θ120
For the symmetric placement (object lies at angle bisector), the number of images formed will be
N=n1=360θ1, irrespective of 360θ being even or odd.
For no successive reflection to occur, number of image formed will be 2 (1 each from individual mirror)
N2
n12
n3
360θ3
θ120

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon