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Chapter 34: Q5Q (page 1037)
When a T. rex pursues a jeep in the movie Jurassic Park, we see a reflected image of the T. rex via a side-view mirror, on which is printed the (then darkly humorous) warning: “Objects in mirror are closer than they appear.” Is the mirror flat, convex, or concave?
The mirror is convex.
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In Fig. 34-60, a sand grain is from thin lens 1, on the central axis through the two symmetric lenses. The distance between focal point and lens is for both lenses; the lenses are separated by . (a) What is the distance between lens 2 and the image it produces of the sand grain? Is that image (b) to the left or right of lens 2, (c) real or virtual, and (d) inverted relative to the sand grain or not inverted?
80 through 87 80, 87 SSM WWW 83 Two-lens systems. In Fig. 34-45, stick figure O (the object) stands on the common central axis of two thin, symmetric lenses, which are mounted in the boxed regions. Lens 1 is mounted within the boxed region closer to O, which is at object distance . Lens 2 is mounted within the farther boxed region, at distance . Each problem in Table 34-9 refers to a different combination of lenses and different values for distances, which are given in centimeters. The type of lens is indicated by C for converging and D for diverging; the number after C or D is the distance between a lens and either of its focal points (the proper sign of the focal distance is not indicated). Find (a) the image distance for the image produced by lens 2 (the final image produced by the system) and (b) the overall lateral magnification for the system, including signs. Also, determine whether the final image is (c) real (R)or virtual (V), (d) inverted(I) from object O or non- inverted (NI), and (e) on the same side of lens 2 as object O or on the opposite side.
An object is placed against the center of a converging lens and then moved along the central axis until it is from the lens. During the motion, the distance between the lens and the image it produces is measured. The procedure is then repeated with a diverging lens. Which of the curves in Fig. 34-28 best gives versus the object distance p for these lenses? (Curve 1 consists of two segments. Curve 3 is straight.)
Two plane mirrors are placed parallel to each other and apart. An object is placed from one mirror. Determine the (a) smallest, (b) second smallest, (c) third smallest (occurs twice), and (d) fourth smallest distance between the object and image of the object.
Figure 34-56 shows a beam expander made with two coaxial converging lenses of focal lengths and and separation. The device can expand a laser beam while keeping the light rays in the beam parallel to the central axis through the lenses. Suppose a uniform laser beam of width and intensity enters a beam expander for whichand .What are (a) and (b) of the beam leaving the expander? (c) What value of d is needed for the beam expander if lens 1 is replaced with a diverging lens of focal length?
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