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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsYDSEMedium2 minPYQ_2021

PhysicsMediumsingle choice

In YDSE experiment, the $4^{th}$ dark band is formed opposite to one of the slits. The wavelength of light used is $(d =$ distance between the slits, $D =$ distance between source and the screen)

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Answer:

Solution:

Distance of $4^{th}$ dark band from the centre $= 3.5 \frac{λ D}{d}$ $∴ \frac{d}{2} = \frac{3.5 λ D}{d} ∴ λ = \frac{d ^{2}}{7 D}$

Stream:MHT_CETSubject:PhysicsTopic:Wave OpticsSubtopic:YDSE

⏱ 2mℹ️ Source: PYQ_2021

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