The apparent depth of water in cylindrical water tank of diameter 
is reducing at the rate of 
when water is being drained out at a constant rate. The amount of water drained (in cc/min) is ( 
refractive index of air, 
refractive index of water)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
As, 
Here, 
actual depth and 
apparent depth.
The amount of water drained in 
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 …