What is the index of refraction?
a) A measure of the change in direction of light propagation.
b) A measure of the change in speed of light propa...
What is the index of refraction?
a) A measure of the change in direction of light propagation. b) A measure of the change in speed of light propagation. c) A measure of the change in both direction and speed of light propagation. d) A measure of the frequency of light.
The correct answer is b) A measure of the change in speed of light propagation. The index of refraction is a property of a material that describes how much the speed of light changes when it passes through that material.
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