Practice Refraction And Reflection Of Plane Waves Using Huygens Principle (10.3)

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6 sample questions

Question 1.
Define Huygens' principle in your own words.
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Think about how waves spread from a point.
Question 2.
What happens to the speed of light when it enters a denser medium?
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Consider how light behaves in water vs. air.
3Question 3.
What is Huygens' principle?
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Think about how waves come from the source.
4Question 4.
Snell's Law relates which two angles?
- Angle of reflection and refraction
- Angle of incidence and refraction
- Angle of incidence and wavelength
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Consider what angles are affected when light crosses a boundary.
Question 5.
A light beam enters a glass block (n = 1.5) from air (n = 1) at an angle of 45 degrees. Calculate the angle of refraction.
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Use inverse sine to find the angle.
Question 6.
If an incident beam creates a 30-degree angle with the normal in air and results in a reflected angle of 30 degrees but refracts at 20 degrees, calculate the refractive index of the second medium.
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Remember to manipulate the sine function properly.

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