DQ15C_solution - Discussion Question 15C P212, Week 15...

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Discussion Question 15C P212, Week 15 Convex Mirrors A convex mirror is mounted in a loading dock in order to provide a wide field of view. This convex mirror is spherical, with an 80 cm radius of curvature. A simple camera is placed in front of this mirror to monitor the activity in the loading dock. The camera consists of a single converging lens of focal length 3.75 cm, placed 4.0 cm in front of a CCD array. A truck enters the loading dock and stops at a position 22 m in front of the mirror. (a) Consider the image of the truck formed by the convex mirror. Where is this image located relative to the mirror? First, use your knowledge of spherical mirrors to determine the focal length f of the mirror. What sign should you use for f ? 40 cm , but the mirror is diverging -40 2 111 ' 39.28 cm 2200 ' 40 R f fc m s s == = += →= (b) Could a person standing in front of the convex mirror see an image of the truck? If so, what sort of image would it be? (Upright or inverted? Magnified or diminished?) Since s' < 0, the image is in back of the mirror and thus visible to a person in front
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DQ15C_solution - Discussion Question 15C P212, Week 15...

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