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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsMiscellaneousMedium2 minPYQ_2023

PhysicsMediumsingle choice

The angle of prism is A and one of its refracting surface is silvered. Light rays falling at an angle of incidence ' $2 A$ ' on the first surface return back through the same path after suffering reflection at the silvered surface. The refractive index of the material of the prism is

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Answer:

Solution:

Given: Angle of Prism $= A, I = 2 A$ As DE is falling normally on the silvered side $AC$ , $r = 90 - (90 - A) r = A$ Using Snell's law, $\frac{s i n i}{s i n r} = \frac{s i n 2 A}{s i n A} = \frac{2 s i n A c o s A}{s i n A} = 2 cos A$

Stream:MHT_CETSubject:PhysicsTopic:Wave OpticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2023

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