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Back to 1.6 Huygens’s Principle

1.6 Exercise 1

Avg difficulty 2.5

In the example, we had n1<n2n_{1} < n_{2}. If n2n_{2} were decreased such that n1>n2n_{1} > n_{2} and the speed of light in medium 2 is faster than in medium 1, what would happen to the length of AA′A A ′? What would happen to the wave front A′B′A ′ B ′ and the direction of the refracted ray?

OpenStax University Physics Volume 3, 1.6 Huygens’s Principle, exercise 1

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Adapted from University Physics Volume 3 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 3. Imported at revision db44eb9.