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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsYDSEMedium2 minPYQ_2021

PhysicsMediumsingle choice

In Young's double slit experiment using monochromatic light of wavelength ' $λ$ ', the maximum intensity of light at a point on the screen is $K$ units. The intensity of light at point where the path difference is $\frac{λ}{3}$

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Answer:

Solution:

The intensity is given by $I = 4 I_{0} cos^{2} \frac{ϕ}{2}$ Maximum intensity $K = 4 I_{0}$ when $ϕ = 0$ When path difference is $\frac{λ}{3}, ϕ = \frac{2 π}{3}$ $∴ I = K cos^{2} \frac{π}{3} = K (\frac{1}{2})^{2} = \frac{K}{4}$

Stream:MHT_CETSubject:PhysicsTopic:Wave OpticsSubtopic:YDSE

⏱ 2mℹ️ Source: PYQ_2021

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