A fish is 1.2 m beneath the surface of a still pond of water.At what maximum angle can the fish look toward the surface (measured with respect to the normal to the surface)in order to see a fisherman sitting on a distant bank? (for water,n = 1.333)
A)18.6°
B)37.2°
C)48.6°
D)The fish will not see the fisherman at any angle.

Question

Quizplus · Accepted Answer

The maximum angle is determined by the critical angle for total internal reflection, which can be calculated using Snell's Law. The critical angle is approximately 48.6° for water with a refractive index of 1.333.

A Fish Is 1