First slide

Young's double slit Experiment

Question

In young double slit experiment, the fringe width is $β .$ If the entire arrangement is now placed inside a liquid of refractive index $μ = \frac{4}{3},$ the new fringe width will be ____

Moderate

A

$\frac{7 β}{3}$
B

$\frac{5 β}{3}$
C

$\frac{4 β}{3}$
D

$\frac{3 β}{4}$

Solution

$\begin{array}{l} β = \frac{λ D}{d} a n d β^{'} = \frac{λ' D}{d} = \frac{(λ / μ) D}{d} \\ ∴ β^{'} = \frac{(λ D / d)}{(4 / 3)} = \frac{3 β}{4} \end{array}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App