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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsDiffractionEasy2 minPYQ_2020

PhysicsEasysingle choice

A parallel beam of monochromatic light of wavelength $5000 Å$ is incident normally on a single narrow slit of width 0.001 mm. The light is focused by a convex lens on a screen placed in focal plane. The first minimum will be formed for the angle of diffraction equal to

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Answer:

Solution:

For first minimum, $a \sin θ = n λ = 1 λ$

$\sin θ = \frac{λ}{a} = \frac{5000 \times 10^{- 10}}{0.001 \times 10^{- 3}} = 0.5$

$θ = 30^{o}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

⏱ 2mℹ️ Source: PYQ_2020

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