Question

find the corresponding when a driver at a depth of 12m in water (u=4/3)sees the sky in a cone of semi vertical angle​

Answer 1

Answer:

The semi-vertical angle is

Explanation:

:

Given the refractive index of water w.r.t. air

Thus refractive index of air w.r.t. the water

Let the incidence angle in water be

Then the angle of refraction in air

From Snell's Law we know that

Hope this answer is helpful.