Refraction of Light

IMPORTANT

Refraction of Light: Overview

This topic explains concepts such as, Refraction of Light, Refracted Ray, Angle of Refraction, Optical Density, etc.

Important Questions on Refraction of Light

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A beam of light is converging towards a point I. A plane parallel plate of glass of thickness t, refractive index μ is introduced in the path of the beam. The convergent point is shifted by (assume near normal incidence):

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The diagram shows five isosceles right angled prisms. A light ray incident at 90o at the first face emerges at same angle with the normal from the last face. which of the following relations will hold regarding the refractive indices?
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When a ray of light enters a glass slab from air.

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(i)A ray of light incident on an equilateral glass prism shows the minimum deviation of 30°. Calculate the speed of light through the glass prism.
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(ii) Find the angle of incidence at face AB so that the emergent ray grazes along the face AC.

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Write Snell's Law of refraction.

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The refractive indices of glycerine and diamond with respect to air are 1.4 and 2.4 respectively. Calculate the speed of light in glycerine and diamond. From these results calculate the refractive index of diamond with respect to glycerine. 

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The refractive index of glass with respect to air is 32. The refractive index of air with respect to glass will be:

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A ray of light in medium of refractive index μ1 is partly reflected and refracted at the boundary of a medium of refractive index μ2 as  shown in the figure. If BOC=90°, the value of angle i is given by

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How is the Refraction through the glass slab different from the Refraction through prism?

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How is the refraction through glass slab is different from the refraction through prism?

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Refractive index of glass wrt water is 54 and R.I. of water wrt air is 43 then what is R.I. of glass wrt air?

MEDIUM
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The refractive index of glass with respect to water is 54 and the refractive index of water with respect to air is 43. What is the refractive index of glass with respect to air?

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Velocity of light is greater in denser medium than in rarer medium.

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Identify the denser medium and the rarer medium in the image.

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How refraction occurs in a glass slab? Show with the help of diagram.

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What is the change in the angle of refraction of a refracted ray if it travels from rarer to a denser medium?

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What do you mean by the angle of refraction?

MEDIUM
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During refraction of the light through a glass slab, the incident ray and the emergent ray are perpendicular to each other.

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What is the cause of refraction of light through a glass slab? Explain with the help of a diagram.

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How does refraction takes place in a rectangular glass slab?