An equilateral prism is placed on a horizontal surface. A ray AB is incident on it. For minimum deviation
Text Solution
Verified by ExpertsThe correct answer is:
B
For minimum deviation through a prism, the light ray travels symmetrically, i.e. the angle of incidence = angle of emergence.
In an equilateral prism, this symmetry makes the refracted ray inside (BC) parallel to the base (horizontal) of the prism.
Hence, BC must be horizontal.
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
Light falls on a plane reflecting surface. For what angle of incidence is the reflected ray normal …
A plane mirror reflects a pencil of light to form a real image, then the pencil of light incident o…
A man is 180 cm tall and his eyes are 10 cm below the top of his head. In order to see this entire …
To get three images of a single object, one should have two plane mirrors at an angle of
An object (O) is placed between two parallel plane mirrors as shown in figure. Distance between 4th…
A concave mirror of focal length f (in air) is immersed in water . The focal length of the mirror …