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

Young's double slit experiment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies where 5th dark fringe lies in air. The refractive index of the medium is nearly

A
1.59
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
1.69
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
1.78
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
1.25
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 1.78
In medium λmedium=λairμ
λ=λμ
For Air, 5th dark,
ys=(2m1)λD2d
For m=5, ys=9λD2d
For bright in medium (n=8)
y=nλDd, λ=λμ
y=8λμDd
y=y
9×D2d=8×Dμd
μ=8×29
μ=1.78

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