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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsDiffractionEasy2 minPYQ_2020

PhysicsEasysingle choice

A beam of light $(λ = 600 nm)$ from a distant source falls on a single slit $1 mm$ wide and the resulting diffraction pattern is observed on a screen $2 m$ away. The distance between the first dark fringes on either side of the central bright fringe is

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Answer:

Solution:

Distance between $1^{s t}$ order dark fringes = width of principle maximum

$X = \frac{2 λ D}{d}$

$= \frac{2 \times 600 \times 10^{- 9} \times 2}{10^{- 3}}$

$= 2400 \times 10^{- 6}$

$= 2 .4 \times 10^{- 3} m$

$= 2 .4 mm$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

⏱ 2mℹ️ Source: PYQ_2020

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