First slide

Young's double slit Experiment

Question

Young's double slit experiment is made in a liquid. The 10th bright fringe in liquid lies where 6th dark fringe lies in vacuum. The refractive index of the liquid is approximately

Moderate

A

1.8
B

1.54
C

1.67
D

1.2

Solution

(1)
In the liquid, $y_{10} = \frac{10 (λ / μ) D}{d}$
In vacuum, position of 6th dark fringe $y_{6} = \frac{(5 + \frac{1}{2}) λ D}{d}$
$N o w, y_{10} = y_{6} \Rightarrow \frac{10 λ D}{μ d} = \frac{11}{2} \frac{λ D}{d} \Rightarrow μ = \frac{20}{11} ≃ 1.8$

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