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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsYDSEEasy2 minPYQ_2020

PhysicsEasysingle choice

In Young's double slits experiment, if the separation between the slits is halved, and the distance between the slits and the screen is doubled, then the fringe width compared to the original one will be

Options:

Answer:

Solution:

The fringe width,

$β = \frac{λ D}{d}$

Where, $λ =$ wavelength of light

$d =$ distance of slit

$D =$ distance of screen from slit.

According to question,

$d^{'} = \frac{d}{2}$

$D = 2 D$

$β^{'} = ?$

$β^{'} = \frac{λ D'}{d'}$

$= \frac{λ 2 D}{d / 2} = 4 β$

So, the fringe width will be quadrupled.

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:YDSE

⏱ 2mℹ️ Source: PYQ_2020

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