A point source S is placed at the bottom of a 12 mm high transparent block of diamond(refractive index = 2.4). The block is immersed in an optically rarer liquid as shown in the figure. It is found that the light emerging from the block to the liquid forms a circular bright spot of diameter 18 mm on the top of the block. What is the refractive index of the liquid?
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
01.80
As the light is passing from optically denser medium to rarer medium, let us assume 
is the critical angle.
From Pythagoras theorem,
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
A large temple has a depression in one wall. On the floor plan, it appears as an indentation having…
A point object is placed on the principal axis of a concave mirror, at a distance of 15 cm from the…
A point source of light is placed at a distance h below the surface of a large deep lake. Neglectin…
A lens forms a real image of an object at a distance of 20 cm. It is observed that on placing anoth…
An object is placed at a distance of 40 cm from a convex lens of focal length 20 cm. On the far sid…
A glass prism is immersed in water as shown in the figure. When a beam of light incident is inciden…