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Students allow a narrow beam of laser light to strike a water surface. They arrange to measure

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Students allow a narrow beam of laser light to strike a water surface. They arrange to measure the angle of refraction for selected angles of incidence and record the data shown in the following table:

Use the data to verify Snell€™s law of refraction by plotting the sine of the angle of incidence versus the sine of the angle of refraction. From the resulting plot, deduce the index of refraction ofwater.
Angle of Incidence (degrees) Angle of Refraction (degrees) 7.5 10.0 20.0 15.1 22.3 30.0 40.0 28.7 50.0 35.2 60.0 40.3 70
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Angle of Incidence (degrees) Angle of Refraction (degrees) 7.5 10.0 20.0 15.1 22.3 30.0 40.0 28.7 50.0 35.2 60.0 40.3 70.0 45.3 47.7 80.0

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Snells law would predict that nair sine nater sin 8 or since nair 100 sin 0 nater s...View the full answer


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College Physics

College Physics

ISBN: 978-0495113690

7th Edition

Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett

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Using a few basic physics principles, you can impress your friends with a trick that makes a bottle disappear. For this experiment, you will need a mini plastic bottle, glycerin, a glass, and a funnel. First, open the bottle and pour some glycerin into it, then close the bottle tightly. Next, pour some water into the glass using a funnel. Place the mini bottle into the glass of water and it will look normal. This is because light travels through air faster than it travels through the glass and water, allowing our eyes to see the bottle inside the glass. However, when you fill the mini bottle with more glycerin, and pour glycerin into the glass, then put the glycerin filled bottle into the glass with glycerin in it. Half of the bottle that is submerged in the glycerin will become invisible as the light travels through glass and glycerin at the same speed, thus it does not bend and no refraction takes place, making the bottle invisible. This happens because both glass and glycerin have almost the same refractive index, which causes the speed of light to be the same in both mediums, causing no bending of light and making the bottle disappear.

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