Student Login

Home›Chapters›Ray Optics PYQs›Prism, Dispersion & Scattering›Question 38

MHT CET 2023 (14 May, Shift 2) · Prism, Dispersion & Scattering

Prism, Dispersion & Scattering question from MHT CET 2023 (14 May, Shift 2)

Q38MHT CET 2023 · 14 MAY · SHIFT 2Easy

Prism, Dispersion & Scattering

When a monochromatic ray of light is passed through an equilateral glass prism, it is found that the refracted ray in glass is parallel to the base of the prism. If ' $i$ ' and ' $e$ ' denote the angles of incidence and emergence respectively, then

Show answer and solution

Answer: (c)

Refracted ray parallel to the base of an equilateral prism means $r_1 = r_2 = 30^\circ$ : this is the minimum deviation position.
By symmetry (and Snell's law at both faces) $\sin i = \mu \sin r_1 = \mu \sin r_2 = \sin e$ .
So the answer is (c) $i = e$ .

Report a mistake

More questions on Prism, Dispersion & Scattering

A horizontal ray of light is incident on the right angled prism with prism angle 6°. If…NEET 2023
When a beam of white light is allowed to pass through convex lens parallel to principal…JEE Main 2023 (24 Jan, Shift 2)
Which of the following is NOT involved in the formation of secondary rainbow?MHT CET 2023 (10 May, Shift 1)
A ray of light passes through an equilateral prism such that the angle of incidence (i)…MHT CET 2023 (13 May, Shift 2)
The angle of deviation produced by a thin prism when placed in air is ' δ₁ ' and that…MHT CET 2023 (14 May, Shift 1)
A ray of light is incident at an angle of incidence ' i ' on one surface of a prism of…MHT CET 2023 (13 May, Shift 1)
The refractive index of a transparent liquid filled in an equilateral hollow prism is…JEE Main 2023 (15 Apr, Shift 1)
The prism has refracting angle ' A '. The second refracting surface of the prism is…MHT CET 2023 (11 May, Shift 1)