Questions
1 Draw rays and a normal. Mark and label the normal, an angle of incidence, an angle of refraction, and an angle of reflection on the ray diagram.
Note: draw the normal clearly and carefully.
2 Draw the wave shown after reflection from the plane mirror.
Note: show any construction lines.
3 State Huygen's principle.
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a Show, (with a diagram), how Huygen's principle is an aid when constructing a wave diagram to represent a plane wave passing through a small opening.
i What name is given to this wave phenomenon?
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ii Briefly discuss the application of this principle to explain the behavior of audible sound waves in air.
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b Show, (with a diagram), how Huygen's principle is an aid when constructing a wave diagram showing how water waves bend as they pass from deep to shallow water.
i What name is given to this phenomenon?
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4 You have measured angles of incidence and refraction for water waves crossing from deep to shallow water.
You want to calculate the ratio sin i over sin r and to show that the ratio is constant. How would you go about doing that to demonstrate good data analysis using Logger Pro, or otherwise?
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