A diverging beam of light from a point source S having divergence angle α, falls symmetrically on a glass slab as shown in figure. The angles of incidence of the two extreme rays are equal. If the thickness of the glass slab is t and the refractive index n, then the divergence angle of the emergent beam is
A
zero
B
α
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Since, rays after passing through the glass slab just suffer lateral displacement. So, angle between emergent ray is also α.
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 …