Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A ray of monochromatic light is passing through an equilateral prism 
as shown in the figure. The refracted ray (QR) is parallel to its base (BC) and the angle of incidence (i) is 
. Then the angle of deviation ( 
) is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
For an equilateral prism 
since refracted ray is parallel to base so it is condition of minimum deviation.
and 
──────────────────────────────────────────────────────────────────────────────────────────
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Physics
For a simple pendulum, having time period T, the variation of kinetic energy (K.E) with tim…
A room heater is rated . If the supply voltage drops to 200 V, what will be the power consumed (ap…
The angular speed of a flywheel is increased from 600 rpm to 1200 rpm in 10 s. The number of revolu…
The sum of kinetic energy and potential energy of a simple pendulum bob is 0.02 joule. The speed of…
A 100-turn closely wound circular coil of radius 5 cm has a magnetic field of at its centre. The c…
A submarine is designed to withstand an absolute pressure of 100 atm. How deep can it go below the …