An underwater diver sees the sun 57 ∘ above horizontal. how high is the sun above the horizon to a fisherman in a boat above the diver?

Angle at which under water diver sees the sun from horizontal =

Angle from normal direction =  90 - 57 =

Refractive index of water = 1.33

Refractive index of water = 1

We have the equation

   1.33 * sin = 1 *sin

  =

This angle is angle from normal, so angle seen by fisherman from horizontal = 90 - 46.42 =

pretty sure it's false

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.