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Mini-Quiz: Refraction of Light

by Ron Kurtus

Take this Mini-Quiz to check your understanding of the lesson material.

1. What causes light to slow down when passing through a transparent material?

Soldiers in mud always march slower

Electric fields in the material hold back the light

It is really an optical illusion

2. What is the index of refraction?

It is the speed of light in the material

It is the angle that the light is refracted

It is the ratio of the speed of light in vacuum and in the material

3. Why does the beam of light bend?

When one end of the wave slows down, the wave's direction changes

It is reflected at an angle

The light is trying to get out of the glass as fast as possible

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

Live life to the fullest

Resources and references

Ron Kurtus' Credentials


Refraction of Light - From the University of Missouri

Electromagnetic Waves Resources

Physics Resources


(Notice: The School for Champions may earn commissions from book purchases)

Schaum's Outline of Optics by Eugene Hecht; McGraw-Hill (1974) $16.95

Introduction to Modern Optics by Grant R. Fowles; Dover Publications (1989) $16.95

Optics by Eugene Hecht; Addison Wesley (2001) $108.00 - Textbook covers wave motion, electromagnetic theory, propagation of light, geometrical optics, superimposition of waves, polarization, interference, diffraction, fourier optics and lasers

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