First slide

Young's double slit Experiment

Question

In a Young's double slit experiment, the fringe width is found to be 0.4 mm. If the whole apparatus is immersed in water of refractive index 4/3 without disturbing the geometrical arrangement, the new fringe width will be

Moderate

A

0.30 mm
B

0.40 mm
C

0.53 mm
D

450 micron

Solution

$β = \frac{λD}{d}; ∴ B \propto λ$
$\frac{λ^{'}}{λ} = \frac{0 .4}{4 / 3}$
$\Rightarrow λ^{'} = 0 .3 mm$

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