Refraction Through a Prism

IMPORTANT

Refraction Through a Prism: Overview

This topic covers concepts, such as, Prism, Deviation by Prism, Condition for Minimum Deviation in Prism, Deviation versus Incident Angle Graph in Prism & Refractive Index Formula for Prism etc.

Important Questions on Refraction Through a Prism

EASY
IMPORTANT

In a prism except the position of minimum values of angle of deviation there are _____ incidence producing same angle of deviation.

MEDIUM
IMPORTANT

Calculate refractive index of a equilateral glass prism for a light of red colour. Angle of minimum deviation for red colour is 30°.

EASY
IMPORTANT

A ray of light incident at an angle of 48° on a prism of refracting angle 60° suffers minimum deviation. Determine the angle of minimum deviation in degrees.

EASY
IMPORTANT

The angle of _____ increases with the increase in the angle of prism.

MEDIUM
IMPORTANT

The angle of deviation depends on the refractive index of the glass.

EASY
IMPORTANT

When a beam of white light passes through a prism it gets

EASY
IMPORTANT

For a given prism, the _____ light deviates most and the red light deviates least.

EASY
IMPORTANT

A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each of these angles is equal to 34th of the angle of the prism. The angle of deviation is 

HARD
IMPORTANT

Maximum deviation occurs in a homogeneous prism of refracting angle A1 and having critical angle of its material as A2, when the  angle of incidence is -

HARD
IMPORTANT

A light ray incidents normally on one surface of an equilateral prism. The angle of deviation of the light ray is (Refractive index of the material of the prism =2 )

MEDIUM
IMPORTANT

A ray of light is incident on a prism as shown in the figure. The total deviation suffered by the ray is x°2. Then find x.

(BAC=1° and CAD=2°, refractive indices are shown in figure)

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MEDIUM
IMPORTANT

A ray of light passes through an equilateral prism such that angle of incidence is equal to angle of emergence and the latter is equal to 34th of the angle of prism. The angle of deviation is (in

MEDIUM
IMPORTANT

What is the relation between i and e when a prism is in the position of minimum deviation? 

EASY
IMPORTANT

If the yellow light is refracted by a prism at an angle of minimum deviation then-

EASY
IMPORTANT

A ray passes through an equilateral glass prism such that i=e, which is 3/4 of the prism angle. Then deviation will be -

EASY
IMPORTANT

The graph is plotted between the angle of deviation δ and angle of incidence i for a triangular prism is represented by which of the following:

MEDIUM
IMPORTANT

STATEMENT-1 : There exists two angles of incidence for the same deviation (except minimum deviation) by a prism kept in air.
STATEMENT-2 : This is due to principal of reversibility of light

HARD
IMPORTANT

Angle of incident for minimum deviation through the prism will be:

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EASY
IMPORTANT

A ray of light strikes a plane mirror at an angle of incidence 45o as shown in the figure. After reflection, the ray passes through a prism of refractive index 1.50, whose apex angle is 4o . The angle through which the mirror should be rotated if the total deviation of the ray is to be 90o is.
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HARD
IMPORTANT

For a prism of refractive index 1.732, the angle of minimum deviation is equal to the angle of prism. Then the angle of the prism is