A swimming pool appears shallower when viewed from its edge
PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A swimming pool appears shallower when viewed from its edge. Which of the following is the chief reason for this observation?
(a) Light rays bend away from the normal on passing from water to air, so the eye traces them back to a point closer to the surface.
(b) Light rays bend towards the normal on emerging from water, thus shortening the apparent depth.
(c) Total internal reflection at the water surface shifts the image of the pool bottom upward.
(d) Light travels faster in water than in air, so the bottom appears raised to the observer.