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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsDiffractionMedium2 minPYQ_2016

PhysicsMediumsingle choice

In a diffraction pattern due to a single slit of width $a$ the first minimum is observed at an angle $30^{o}$ when light of wavelength $5000 Å$ is incident on the slit. The first secondary maximum is observed at an angle of:NEET 2016 (Phase 1)

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Answer:

Solution:

$a \sin 30 = λ$

$a \sin θ = \frac{3 λ}{2}$

$\frac{\sin θ}{\sin 30} = \frac{3}{2}$

$\sin θ = \frac{3}{2} \times \frac{1}{2}$

$\sin θ = \frac{3}{4}$

$θ = \sin (\frac{3}{4})$

Stream:NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

⏱ 2mℹ️ Source: PYQ_2016

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