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Chapter 34: Q49P (page 1040)
An illuminated slide is held from a screen. How far from the slide must a lens of focal length be placed (between the slide and the screen) to form an image of the slide’s picture on the screen?
Distance from the slide at which the lens should be placed is .
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(a) Show that if the object O in Fig. 34-19c is moved from focal point toward the observer’s eye, the image moves in from infinity and the angle (and thus the angular magnification mu) increases. (b) If you continue this process, where is the image when mu has its maximum usable value? (You can then still increase, but the image will no longer be clear.) (c) Show that the maximum usable value of is.(d) Show that in this situation the angular magnification is equal to the lateral magnification.
A pinhole camera has the hole a distancefrom the film plane, which is a rectangle of height and width . How far from a painting of dimensions by should the camera be placed so as to get the largest complete image possible on the film plane?
58 through 67 61 59 Lenses with given radii. Object stands in front of a thin lens, on the central axis. For this situation, each problem in Table 34-7 gives object distance , index of refraction n of the lens, radius of the nearer lens surface, and radius of the farther lens surface. (All distances are in centimetres.) Find (a) the image distance and (b) the lateral magnification m of the object, including signs. Also, determine whether the image is (c) real (R) or virtual , (d) inverted from object or non-inverted (NI), and (e) on the same side of the lens as object or on the opposite side
You grind the lenses shown in Fig. 34-53 from flat glass disks using a machine that can grind a radius of curvature of either or . In a lens where either radius is appropriate, you select the radius. Then you hold each lens in sunshine to form an image of the Sun. What are the (a) focal length fand (b) image type (real or virtual) for (bi-convex) lens 1, (c)f and (d) image type for (plane-convex) lens 2, (e) f and (f) image type for (meniscus convex) lens 3, (g) f and (h) image type for (bi-concave) lens 4, (i) fand (j) image type for (plane-concave) lens 5, and (k) f and (l) image type for (meniscus concave) lens 6?
An object is moved along the central axis of a spherical mirror while the lateral magnification m of it is measured. Figure 34-35 gives m versus object distance p for the range and . What is m for ?
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