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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsDiffractionMedium2 minPYQ_2020

PhysicsMediumsingle choice

In biprism experiment, if $5^{th}$ bright band with wavelength $^{'} λ_{1}^{'}$ coincides with $6^{th}$ dark band with wavelength $^{'} λ_{2}$ ' then the ratio $(\frac{λ _{2}}{λ _{1}})$ is

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Answer:

Solution:

$y_{5} = \frac{5 λ _{1} D}{d}$ $y_{6}^{'} = \frac{11 λ _{2} D}{2 d}$ $5 λ_{1} = \frac{11 λ _{2}}{2}$ $\frac{λ _{1}}{λ _{2}} = \frac{11}{10}$ $∴ \frac{λ _{2}}{λ _{1}} = \frac{10}{11}$

Stream:MHT_CETSubject:PhysicsTopic:Wave OpticsSubtopic:Diffraction

⏱ 2mℹ️ Source: PYQ_2020

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