Physics (5th Edition)
5th Edition
ISBN: 9780134051802
Author: Walker
Publisher: PEARSON
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Question
Chapter 26, Problem 6CQ
To determine
Whether the light always bends toward the normal when it propagates from one medium to another.
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Students have asked these similar questions
7. Light travels from a medium with n = 1.25 into a medium of n = 1.34,
at an angle of 27 from the interface normal.
(a) What happens to the speed of the light? Does it increase, decrease,
or remain the same?
(b) What happens to the wavelength of the light? Does it increase,
decrease, or remain the same?
(c) Does the light bend towards the normal, away from the normal, or not
at all? Draw the ray diagram to show it.
8. Light is refracted at the interface between air and an unknown
medium. If the angle of incidence is 53 and the angle of refraction
is 37°, calculate the refractive index of the unknown, second
medium.
Chapter 26 Solutions
Physics (5th Edition)
Ch. 26.1 - A ray of light reflects from a horizontal flat...Ch. 26.2 - A meterstick is placed 40 cm in front of a plane...Ch. 26.3 - Rank the following spherical mirrors in order of...Ch. 26.4 - A spherical mirror with an object at the distance...Ch. 26.5 - (a) As a beam of light passes from flint glass to...Ch. 26.6 - The lenses shown in Figure 26-49 have objects that...Ch. 26.7 - An object at the distance do = 15 cm from a lens...Ch. 26.8 - Referring to Figure 26-53, do you expect the index...Ch. 26 - Two plane mirrors meet at right angles at the...Ch. 26 - Two plane mirrors meet at right angles at the...
Ch. 26 - What is the radius of curvature of a plane mirror?...Ch. 26 - Dish receivers for satellite TV always use the...Ch. 26 - Suppose you would like to start a fire by focusing...Ch. 26 - Prob. 6CQCh. 26 - A swimmer at point 8 in Figure 26-55 needs help...Ch. 26 - When you observe a mirage on a hot day, what are...Ch. 26 - Sitting on a deserted beach one evening, you watch...Ch. 26 - The Disappearing Eyedropper The photograph in...Ch. 26 - The Invisible Man In the H. G. Wells novel The...Ch. 26 - Whats the Secret? The top of Figure 26-57 shows...Ch. 26 - A laser beam is reflected by a plane mirror. It is...Ch. 26 - The angle between the Sun and a rescue aircraft is...Ch. 26 - The reflecting surfaces of two mirrors form a...Ch. 26 - A ray of light reflects from a plane mirror with...Ch. 26 - Predict/Calculate A small vertical mirror hangs on...Ch. 26 - Sunlight enters a room at an angle of 32 above the...Ch. 26 - You stand 1.50 m in front of a wall and gaze...Ch. 26 - Predict/Calculate Standing 2.3 m in front of a...Ch. 26 - How many times does the light beam shown in Figure...Ch. 26 - If you view a clock in a mirror as in Figure...Ch. 26 - A 13.5-foot-long, nearsighted python is stretched...Ch. 26 - (a) How rapidly does the distance between you and...Ch. 26 - You are 1.8 m tall and stand 2.8 m from a plane...Ch. 26 - The rear window in a car is approximately a...Ch. 26 - Predict/Calculate You hold a small plane mirror...Ch. 26 - Prob. 16PCECh. 26 - Astronomers often use large mirrors in their...Ch. 26 - A section of a sphere has a radius of curvature of...Ch. 26 - A mirrored-glass gazing globe in a garden is 31.9...Ch. 26 - Sunlight reflects from a concave piece of broken...Ch. 26 - You hold a shiny tablespoon at aims length and...Ch. 26 - You hold a shiny tablespoon at arms length and...Ch. 26 - An object is placed to the left of a concave...Ch. 26 - An object is placed to the left of a convex...Ch. 26 - A small object is located 36.0 cm in front of a...Ch. 26 - An object with a height of 33 cm is placed 2.0 m...Ch. 26 - An object with a height of 33 cm is placed 2.0 m...Ch. 26 - An object with a height of 33 cm is placed 2.0 m...Ch. 26 - Find the location and magnification of the image...Ch. 26 - During a daytime football game you notice that a...Ch. 26 - A convex mirror on the passenger side of a car...Ch. 26 - Predict/Calculate A magician wishes to create the...Ch. 26 - A person 1.8 m tall stands 0.86 m from a...Ch. 26 - Shaving/makeup mirrors typically have one flat and...Ch. 26 - The Hale Telescope The 200-inch-diameter concave...Ch. 26 - A concave mirror produces a virtual image that is...Ch. 26 - A concave mirror produces a real image that is...Ch. 26 - The virtual image produced by a convex mirror is...Ch. 26 - You view a nearby tree in a concave mirror. The...Ch. 26 - A shaving/makeup mirror produces an erect image...Ch. 26 - A concave mirror with a focal length of 36 cm...Ch. 26 - Predict/Explain When a ray of light enters a glass...Ch. 26 - Samurai Fishing A humorous scene in Akira...Ch. 26 - Prob. 44PCECh. 26 - Predict/Explain A kitchen has twin side-by-side...Ch. 26 - Light travels a distance of 0.902 m in 4.00 ns in...Ch. 26 - Prob. 47PCECh. 26 - The angle of refraction of a ray of light...Ch. 26 - Ptolemys Optics One of the many works published by...Ch. 26 - A submerged scuba diver looks up toward the calm...Ch. 26 - Prob. 51PCECh. 26 - Light is refracted as it travels from a point A in...Ch. 26 - You have a semicircular disk of glass with an...Ch. 26 - The observer in Figure 26-65 is positioned so that...Ch. 26 - A coin is lying at the bottom of a pool of water...Ch. 26 - Prob. 56PCECh. 26 - Prob. 57PCECh. 26 - Predict/Calculate Suppose the glass paperweight in...Ch. 26 - While studying physics at the library late one...Ch. 26 - A horizontal beam of light enters a 45 90 45 prism...Ch. 26 - A laser team enters one of the sloping faces of...Ch. 26 - (a) Use a ray diagram to determine the approximate...Ch. 26 - (a) Use a ray diagram to determine the approximate...Ch. 26 - An object is a distance ft2 from a convex lens (a)...Ch. 26 - An object is a distance 2f from a convex lens (a)...Ch. 26 - Two lenses that are 35 cm apart are used to form...Ch. 26 - Two lenses that are 35 cm apart are used to form...Ch. 26 - A convex lens is held over a piece of paper...Ch. 26 - A concave lens has a focal length of 39cm. Find...Ch. 26 - When an object is located 38 cm to the left of a...Ch. 26 - An object with a height of 2 54 cm is placed 36 3...Ch. 26 - A lens for a digital camera has a focal length...Ch. 26 - Predict/Calculate An object is located to the left...Ch. 26 - Predict/Calculate You have two lenses at your...Ch. 26 - (a) Determine the distance from lens 1 to the...Ch. 26 - (a) Determine the distance from lens 1 to the...Ch. 26 - Predict/Calculate An object is located to the left...Ch. 26 - BIO Predict/Calculate Albert is nearsighted and...Ch. 26 - A small insect viewed through a convex lens is 1.8...Ch. 26 - Predict/Calculate A friend tells you that when he...Ch. 26 - Predict/Calculate A friend tells you that when she...Ch. 26 - Prob. 82PCECh. 26 - Predict/Explain You take a picture of a rainbow...Ch. 26 - The index of refraction for red light in a certain...Ch. 26 - A horizontal incident beam consisting of white...Ch. 26 - Prob. 86PCECh. 26 - CE Jurassic Park A T. rex chases the heroes of...Ch. 26 - CE Predict/Explain If a lens is immersed in water...Ch. 26 - CE Predict/Explain A glass slab surrounded by air...Ch. 26 - CE Inverse Lenses Suppose we mold a hollow piece...Ch. 26 - Standing 2 5 m in front of a small vertical mirror...Ch. 26 - Prob. 92GPCh. 26 - (a) Find the two locations where an object can be...Ch. 26 - A convex mirror with a focal length of -85 is used...Ch. 26 - Prob. 95GPCh. 26 - Predic/Calculate A film of oil with an index of...Ch. 26 - Figure 26-75 shows a ray of light entering one end...Ch. 26 - Suppose the fiber depicted in Figure 26-75 has an...Ch. 26 - An arrow 2.00 cm long is located 75.0 cm from a...Ch. 26 - A convex lens with f1 = 200 cm is mounted 40.0 cm...Ch. 26 - Two thin lenses with focal lengths f1 and f2, are...Ch. 26 - When an object is placed a distance d0 in front of...Ch. 26 - A Slab of Glass Give a symbolic expression for the...Ch. 26 - Least Time A beam of light propagates from point A...Ch. 26 - The ray of light shown in Figure 26-79 passes from...Ch. 26 - Predict/Calculate A beam of light enters the...Ch. 26 - A converging lens with a focal length in air of f...Ch. 26 - A diverging lens with f = 12.5 cm is made from...Ch. 26 - Calculate the focal length of a lens in water,...Ch. 26 - Suppose a lens is made from fused quartz (glass),...Ch. 26 - Referring to Example 26-5 Suppose the radius of...Ch. 26 - Predict/Calculate Referring to Example 26-5 object...Ch. 26 - Referring to Example 26-18 (a) What object...Ch. 26 - Predict/Calculate Referring to Example 26-18...
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- Equation 24.14 assumes the incident light is in air. If the light is incident from a medium of index n1 onto a medium of index n2, follow the procedure used to derive Equation 24.14 to show that tan p = n2/n1.arrow_forwardA 4.00-m-long pole stands vertically in a freshwater lake having a depth of 2.00 m. The Sun is 40.0° above the horizontal. Determine the length of the pole’s shadow on the bottom of the lake.arrow_forwardLight passes from a material with index of refraction 1.3 into one with index of refraction 1.2. Compared with the incident ray, what happens to the refracted ray? (a) It bends toward the normal. (b) It is undeflected. (c) It bends away from the normal.arrow_forward
- The index of refraction for water is about 43. What happens as a beam of light travels from air into water? (a) Its speed increases to 43c, and its frequency decreases. (b) Its speed decreases to 34c, and its wavelength decreases by a factor of 34. (c) Its speed decreases to 34c, and its wavelength increases by a factor of 43. (d) Its speed and frequency remain the same. (e) Its speed decreases to 34c, and its frequency increases.arrow_forwardWhat happens to a light wave when it travels from air into glass? (a) Its speed remains the same. (b) Its speed increases. (c) Its wavelength increases. (d) Its wavelength remains the same. (e) Its frequency remains the same.arrow_forwardA 4.00-m-long pole stands vertically in a freshwater lake having a depth of 2.00 m. The Sun is 40.0 above the horizontal. Determine the length of the poles shadow on the bottom of the lake.arrow_forward
- Light traveling in a medium of index of refraction n1 is incident on another medium having an index of refraction n2. Under which of the following conditions can total internal reflection occur at the interface of the two media? (a) The indices of refraction have the relation n2 n1. (b) The indices of refraction have the relation n1 n2. (c) Light travels slower in the second medium than in the first. (d) The angle of incidence is less than the critical angle. (e) The angle of incidence must equal the angle of refraction.arrow_forwardCan a sound wave in air be polarized? Explain.arrow_forwardA scuba diver training in a pool looks at his instructor as shown in Figure 25.53. What angle does the ray from the instructor’s face make with the perpendicular to the water at the point where the ray enters? The angle between the ray in the water and the perpendicular to the water is 25.0°. Figure 25.53 A scuba diver in a pool and his trainer look at each other.arrow_forward
- A goldfish is swimming inside a spherical bowl of water having an index of refraction n = 1.333. Suppose the goldfish is p = 10.0 cm from the wall of a howl of radius |R| = 15.0 cm. as in Figure P23.22. Neglecting the refraction of light caused by the wall of the bowl, determine the apparent distance of the goldfish from the wall according to an observer outside the bowl. Figure P23.22arrow_forwardThe angle of incidence of a light beam onto a reflecting surface is continuously variable. The reflected ray in air is completely polarized when the angle of incidence is 48.0. What is the index of refraction of the reflecting material?arrow_forwardPierre de Fermat (16011665) showed that whenever light travels from one point to another, its actual path is the path that requires the smallest time interval. This statement is known as Fermats principle. The simplest example is for light propagating in a homogeneous medium. It moves in a straight line because a straight line is the shortest distance between two points. Derive Snells law of refraction from Fermats principle. Proceed as follows. In Figure P34.54, a light ray travels from point P in medium 1 to point Q in medium 2. The two points are, respectively, at perpendicular distances a and b from the interface. The displacement from P to Q has the component d parallel to the interface, and we let x represent the coordinate of the point where the ray enters the second medium. Let t = 0 be the instant the light starts from P. (a) Show that the time at which the light arrives at Q is t=r1v1+r2v2=n1a2+x2c+n2b2+(dx)2c (b) To obtain the value of x for which t has its minimum value, differentiate t with respect to x and set the derivative equal to zero. Show that the result implies n1xa2+x2=n2(dx)b2+(dx)2 (c) Show that this expression in turn gives Snells law. n1sin1=n2sin2 Figure P34.54 Problems 54 and 55.arrow_forward
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