Question

16. An observer looking up at the water
surface from underneath sees a perfectly
circular image of the entire above-water
hemisphere, from horizon to horizon,
through a cone of light. This
phenomenon, known as Snell's window
or optical man-hole, is caused by
refraction of light entering water, and is
governed by Snell's Law. Due to
refraction at the air-water boundary,
Snell's window compresses a 180° angle
of view above water to a lesser angle of
view, 0° below water, similar to the
effect of a fisheye lens. Find 0.
[Given, u = 4/3 for water, Sin 48.6° ~
3/4]
E TR
Water
A) 120°
C) 48.6°
(B) 24.30
(D) 97.2°​

Answer 1

(A) 120°

(B)48.6°

(C)24.30°

(D)97.2°

ANS.

(C)24.30

MAKE IT BRAINLIEST

Answer 2

Explanation:

option b) 24.30................