Questions from College Physics


Q: Refraction causes objects submerged in water to appear less deep than they

Refraction causes objects submerged in water to appear less deep than they actually are. The fish in Figure P22.49 has an apparent depth of 1.25 m. Calculate its actual depth. Figure P22.49:

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Q: A narrow beam of light is incident from air onto a glass

A narrow beam of light is incident from air onto a glass surface with index of refraction 1.56. Find the angle of incidence for which the corresponding angle of refraction is one-half the angle of inc...

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Q: One technique for measuring the angle of a prism is shown in

One technique for measuring the angle of a prism is shown in Figure P22.51. A parallel beam of light is directed onto the apex of the prism so that the beam reflects from opposite faces of the prism....

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Q: Endoscopes are medical instruments used to examine the gastrointestinal tract and other

Endoscopes are medical instruments used to examine the gastrointestinal tract and other cavities inside the body. The light required for examination is conducted from an outside source along a long, f...

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Q: A piece of wire is bent through an angle θ. The

A piece of wire is bent through an angle θ. The bent wire is partially submerged in benzene (index of refraction = 1.50) so that, to a person looking along the dry part, the wire appears to be straigh...

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Q: A light ray traveling in air is incident on one face of

A light ray traveling in air is incident on one face of a right-angle prism with index of refraction n = 1.50, as shown in Figure P22.54, and the ray follows the path shown in the figure. Assuming &Ic...

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Q: A transparent cylinder of radius R = 2.00 m has

A transparent cylinder of radius R = 2.00 m has a mirrored surface on its right half, as shown in Figure P22.55. A light ray traveling in air is incident on the left side of the cylinder. The incident...

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Q: A laser beam strikes one end of a slab of material,

A laser beam strikes one end of a slab of material, as in Figure P22.56. The index of refraction of the slab is 1.48. Determine the number of internal reflections of the beam before it emerges from th...

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Q: Lenses used in eyeglasses, whether converging or diverging, are always

Lenses used in eyeglasses, whether converging or diverging, are always designed such that the middle of the lens curves away from the eye. Why?

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Q: A light ray enters a rectangular block of plastic at an angle

A light ray enters a rectangular block of plastic at an angle θ1 = 45.0° and emerges at an angle θ2 5 76.0°, as shown in Figure P22.57. (a) Determine th...

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