Physics (5th Edition)
5th Edition
ISBN: 9780134051802
Author: Walker
Publisher: PEARSON
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Textbook Question
Chapter 26, Problem 68PCE
A convex lens is held over a piece of paper outdoors on a sunny day. When the paper is held 26 cm below the lens, the sunlight is focused on the paper and the paper ignites. What is the focal length of the lens?
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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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Convex and Concave Lenses; Author: Manocha Academy;https://www.youtube.com/watch?v=CJ6aB5ULqa0;License: Standard YouTube License, CC-BY