Lesson: Chapter 5 — Optics

5.3. Refraction of light 2 of 5 Reset answers

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Question 2

Why does a coin at the bottom of water look higher than it really is?

A The coin floats up a little B Light from it bends away from the normal as it leaves the water C Light from it bends towards the normal as it leaves the water D The water magnifies it

The right answer is the one marked above.

Light from it bends away from the normal as it leaves the water. Traced back, those bent rays seem to come from a point above the coin.

Water is denser than air, so leaving it the light bends away from the normal, not towards it.

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