Home
Class 12
PHYSICS
In a young's double slit experiment ,let...

In a young's double slit experiment ,let `A`and `B` be the two slits.A thin film film of thickness `t` and refractive index`mu` is pklaced in front of `A`.Let `beta` =fringe width.The central maximum will shift:

A

towards A

B

towards B

C

by `t(mu-1)(beta)/(lambda)`

D

by `mut(beta)/(lambda)`

Text Solution

Verified by Experts

The correct Answer is:
A,C
Central frings will shift towards A.
for central frings path difference=`0`
`S_(2)P-(S_(1)P-t+mut)=0`
`S_(2)P-S_(1)P-(mu-1)t=0`
`(xd)/(D)-(mu-1)t=0`
`x=((mu-1)tD)/(d)...(1)`
`as beta=(lambdaD)/(d)...(2)`
from(1)&(2)
`x=((mu-1)tbeta)/(lambda)`
Promotional Banner

Similar Questions

Explore conceptually related problems

In Young's double-slit experiment, let A and B be the two slit. A thin film of thickness t and refractive index mu is placed in front of A. Let beta = fringe width. Then the central maxima will shift

A double slit experiment is performed with light of wavelength 500nm . A thin film of thickness 2mum and refractive index 1.5 is introduced in the path of the upper beam. The location of the central maximum will

In Young’s double slit experiment, the distance between the two slits is made half, then the fringe width will become

In YDSE, let A and B be two slits. Films of thickness t_(A) and t_(B) and refractive mu_(A) and mu_(B) are placed in front of A and B, respectively. If mu_(A) t_(A) = mu_(A) t_(B) , then the central maxima will

In YDSE when slab of thickness t and refractive index mu is placed in front of one slit then central maxima shifts by one fringe width. Find out t in terms of lambda and mu .

In Young's double slit experiment, for which colour is the fringe width maximum?

In young's double slit experiment, fringe order is represented by m, then fringe width is

In Young's double slit experiment, the distance between two slits is made three times then the fringe width will becomes