Published by:
CGP EDU Academic Team
Published on: August 11, 2026
A pile 4 m high, driven into the bottom of a lake, is 1 m above the water. Determine the length of the shadow of the pile on the bottom of the lake, if the sun rays make an angle of 
with the water surface. The refractive index of water is 
.
Text Solution
Verified by ExpertsThe correct answer is:
C
From Snell's law, 
Solving this equation, we get, 
Further, 
∴ Total length of shadow, 
or 
──────────────────────────────────────────────────────────────────────────────────────────
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
The truth table given below is for ( and are the inputs, is the output.)
001011101110
is a triangular plate of uniform thickness. The sides are in the ratio shown in the figure. and …
A light ray enters through a right angled prism at point with the angle of incidence as shown in …
In Young's double slit experiment, the -coordinates of central maximum and maxima are 2 cm and 5 …
The angle between the electric lines of force and the equipotential surface is
In the given AC circuit, when switch is at position -1, the source emf leads current by . Now, if…