A pole is vertically submerged in swimming pool, such that it gives a length of shadow 2.15m within water when sunlight is incident at an angle of 30 ° with the surface of water. If swimming pool is filled to a height of 1.5 m, then the height of the pole above the water surface in centimeters is 
_____.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(50)
Let angle BAC is 
.
Applying Snell's law at £", we get 1 x sin60° = 
x sin 
Now, BC=1.5xtan 
=1.28
Then, AB = 2.15 - BC = 0. 86 m
Required value, DF = AB tan 30° = 0. 5015 m 
50 cm
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 monochromatic light wave with wavelength and frequency v 1 in air enters another medium. If the …
A 2 meter long scale with least count of 0. 2 cm is used to measure the locations of objects on an …
In a reflecting telescope, a secondary mirror is used to:
The critical angle for a denser-rarer interface is 45°. The speed of light in rarer medium is 3 x 1…
When one light ray is reflected from a plane mirror with 30° angle of reflection, the angle of devi…
An ice cube has a bubble inside. When viewed from one side the apparent distance of the bubble is 1…