wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

Light traveling through three transparent substances follows the path shown in Fig. Arrange the indices of refraction in order from smallest to largest. Note that total internal reflection does occur on the bottom surface of medium 2
159441.png

A
n1<n2<n3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
n2<n1<n3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
n1<n3<n2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
n3<n1<n2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is B n3<n1<n2
As the ray moves toward the normal while entering medium 2 from 1, we have n2>n1
For total internal reflection at interface of 2 and 3,n2>n3.
Besides n3 should also be less than n1 or else ray would have emerged in medium 3, parallel to its path in medium 1.
Hence, n3<n1<n2 is the correct order.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Critical Angle
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon