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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at plane surfaceMedium2 minPYQ_2016

PhysicsMediumsingle choice

A ray of light strikes a glass plate at an angle of $6 0^{\circ}$ . If the reflected and refracted rays are perpendicular to each other, the refractive index of glass is

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Solution:

Here, angle of incidence is $6 0^{\circ}$ $μ = \frac{sin i}{sin r}$ $sin i = μ sin r$ here, $r sin i μ μ = 90 - i = μ sin (9 0^{\circ} - i) = μ cos i = \frac{sin i}{cos i} = tan i = tan 6 0^{\circ} = 3$

Stream:WBJEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at plane surface

⏱ 2mℹ️ Source: PYQ_2016

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