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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 $5 \times 1 0^{- 7} m$ is incident normally on a single narrow slit of width $1 0^{- 3} mm$ . At what angle of diffraction, the first minima is observed?

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Answer:

Solution:

$sin θ = \frac{λ}{a} = \frac{5 \times 1 0 ^{- 7} m}{1 0 ^{- 6} m} = 0.5 = \frac{1}{2}$ $∴ θ = sin^{- 1} (\frac{1}{2})$

Stream:MHT_CETSubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

⏱ 2mℹ️ Source: PYQ_2020

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