Start Free Mock LoginAlready registered? Login here

Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsYDSEEasy2 minQB

PhysicsEasysingle choice

Young's double-slit experiment is performed in a liquid. The $10^{t h}$ bright fringe in case of the liquid lies where $6^{t h}$ bright fringe lies in a vacuum. The refractive index of the liquid approximately is

Options:

Answer:

Solution:

Fringe width in air is given by

$β_{a i r} = \frac{λ D}{d}$

Fringe width in liquid will be, $β_{l i q} = \frac{λ D}{μ d}$

(as $λ_{l i q} = \frac{λ_{a i r}}{μ}$ )

$6 β_{a i r} = 10 β_{l i q}$

$\frac{6 λ D}{d} = \frac{10 λ D}{μ d}$

$μ = \frac{10}{6} = 1.67$

Stream:JEESubject:PhysicsTopic:Wave OpticsSubtopic:YDSE

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...