HW13n

# HW13n - Homework 13 1 Two 3.0 meter-tall planar mirrors are...

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1 Homework 13 1. Two 3.0 meter-tall planar mirrors are placed facing and parallel to each other 0.75 m apart. If a ray of light just passes the bottom edge of one mirror and strikes the other at an incident angle of 10 ° , how many reflections will the light make before exiting this "hall"? 2. A bartender keeps an eye on her customers while her back is turned by way of a mirror mounted behind the bar. The mirror is 0.580 m wide and she is standing 0.750 m from it. How wide an expanse of the parallel wall opposite the mirror can she see in the mirror if the opposite wall is 6.00 m away from the mirror? 3. Use the mirror equation to show that for a planar mirror, the magnitude of the image distance equals the magnitude of the object distance. Hint: A planar mirror can be thought of as a spherical mirror with an infinite radius of curvature. 4. A mirror produces an inverted image 2.80 cm tall when a 5.60 cm tall object is 25.0 cm away from it. (a) What is the image distance? State your answer with the correct sign. (b) What is the focal length of the

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HW13n - Homework 13 1 Two 3.0 meter-tall planar mirrors are...

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