Physics For Scientists And Engineers Format: Kit/package/shrinkwrap
4th Edition
ISBN: 9780134465777
Author: Knight, Randall D., (professor Emeritus)
Publisher: Prentice Hall
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Textbook Question
Chapter 35, Problem 8CQ
To focus parallel light rays to the smallest possible spot, should you use a lens with a small f-number or a large f-number? Explain.
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Physics For Scientists And Engineers Format: Kit/package/shrinkwrap
Ch. 35 - Prob. 1CQCh. 35 - Prob. 2CQCh. 35 - Prob. 3CQCh. 35 - Prob. 4CQCh. 35 - Prob. 5CQCh. 35 - Prob. 6CQCh. 35 - Prob. 7CQCh. 35 - To focus parallel light rays to the smallest...Ch. 35 - Prob. 9CQCh. 35 - Two converging lenses with focal lengths of 40 cm...
Ch. 35 - Prob. 2EAPCh. 35 - Prob. 3EAPCh. 35 - Prob. 4EAPCh. 35 - Prob. 5EAPCh. 35 - A 2.0-rn-tall man is 10 m in front of a camera...Ch. 35 - What is the f-number of a lens with a 35 mm focal...Ch. 35 - What is the aperture diameter of a...Ch. 35 - A camera takes a properly exposed photo at f/5.6...Ch. 35 - A camera takes a properly exposed photo with a...Ch. 35 - Ramon has contact lenses with the prescription...Ch. 35 - Ellen wears eyeglasses with the prescription -1.0...Ch. 35 - 13. What is the f-number of a relaxed eye with the...Ch. 35 - Prob. 14EAPCh. 35 - Prob. 15EAPCh. 35 - Prob. 16EAPCh. 35 - Prob. 17EAPCh. 35 - A 20 telescope has a 12-cm-diameter objective...Ch. 35 - Prob. 19EAPCh. 35 - Prob. 20EAPCh. 35 - Prob. 21EAPCh. 35 - Prob. 22EAPCh. 35 - Prob. 23EAPCh. 35 - A scientist needs to focus a helium-neon laser...Ch. 35 - Prob. 25EAPCh. 35 - Prob. 26EAPCh. 35 - Prob. 27EAPCh. 35 - Prob. 28EAPCh. 35 - Prob. 29EAPCh. 35 - Prob. 30EAPCh. 35 - Prob. 31EAPCh. 35 - Prob. 32EAPCh. 35 - Prob. 33EAPCh. 35 - Prob. 34EAPCh. 35 - Prob. 35EAPCh. 35 - Prob. 36EAPCh. 35 - 37. You’ve been asked Lo build a telescope from a...Ch. 35 - Prob. 38EAPCh. 35 - Prob. 39EAPCh. 35 - Prob. 40EAPCh. 35 - Prob. 41EAPCh. 35 - Prob. 42EAPCh. 35 - Prob. 43EAPCh. 35 - Prob. 44EAPCh. 35 - Prob. 45EAPCh. 35 - Prob. 46EAPCh. 35 - Alpha Centauri, the nearest star to our solar...Ch. 35 - Prob. 48EAPCh. 35 - Prob. 49EAPCh. 35 - Prob. 50EAP
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- An f/2.80 CCD camera has a 105-mm focal length lens and can focus on objects from infinity to as near as 30.0 cm from the lens, (a) Determine the cameras aperture diameter. Determine the (b) minimum and (c) maximum distances from the CCD sensor over which the lens must be able to travel during focusing. Note: f/2.80 means an f-number of 2.80.arrow_forward(a) Use the thin-lens equation to derive an expression for q in terms of f and p. (b) Prove that for a real object and a diverging lens, the image must always be virtual. Hint: Set f = |f| and show that q must be less than zero under the given conditions. (c) For a real object and converging lens, what inequality involving p and f must hold if the image is to be real?arrow_forwardA certain childs near point is 10.0 cm; her far point (with eyes relaxed) is 125 cm. Each eye lens is 2.00 cm from the retina. (a) Between what limits, measured in diopters, does the power of this lenscornea combination vary? (b) Calculate the power of the eyeglass lens the child should use for relaxed distance vision. Is the lens converging or diverging?arrow_forward
- Figure P23.28 shows a curved surface separating a material with index of refraction n1 from a material with index n2. The surface forms an image I of object O. The ray shown in red passes through the surface along a radial line. Its angles of incidence and refraction are both zero, so its direction does not change at the surface. For the ray shown in blue, the direction changes according to n1 sin 1 = n2 sin 2. For paraxial rays, we assume 1 and 2 are small, so we may write n1 tan 1 n2 tan 2. The magnification is defined as M = h/h. Prove that the magnification is given by M = n1q/n2p. Figure P23.28arrow_forwardAn f/2.80 CCD camera has a 105-mm focal length lens and can focus on objects from infinity to as near as 30.0 cm from the lens, (a) Determine the cameras aperture diameter. Determine the (b) minimum and (c) maximum distances from the CCD sensor over which the lens must be able to travel during focusing. Note: f/2.80 means an f-number of 2.80.arrow_forwardA laboratory (astronomical) telescope is used to view a scale that is 300 cm from the objective, which has a focal length of 20.0 cm; the eyepiece has a focal length of 2.00 cm. Calculate the angular magnification when the telescope is adjusted for minimum eyestrain. Note: The object is not at infinity, so the simple expression m = fo/fe is not sufficiently accurate for this problem. Also, assume small angles, so that tan = .arrow_forward
- Two rays traveling parallel to the principal axis strike a large plano-convex lens having a refractive index of 1.60 (Fig. P35.33). If the convex face is spherical, a ray near the edge does not pass through the focal point (spherical aberration occurs). Assume this face has a radius of curvature of R = 20.0 cm and the two rays are at distances h1 = 0.500 cm and h2 = 12.0 cm from the principal axis. Find the difference x in the positions where each crosses the principal axis. Figure P35.33arrow_forwardA laboratory (astronomical) telescope is used to view a scale that is 300 cm from the objective, which has a focal length of 20.0 cm; the eyepiece has a focal length of 2.00 cm. Calculate the angular magnification when the telescope is adjusted for minimum eyestrain. Note: The object is not at infinity, so the simple expression m = fo/fe is not sufficiently accurate for this problem. Also, assume small angles, so that tan = .arrow_forward
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