PHYSICS EXPERIMENT 25-1 REFLECTION BY A CURVED MIRROR NAME SECTION PAGE 6 RELATED QUESTIONS AND PROBLEMS: For each of the following mirror diagrams draw a ray diagram to locate the image. The magnitude of the radius of curvature for each mirror is 20.0 cm and each object is 6.00 cm high. The object distance is given in each diagram. Calculate the image distance and size and record your results in the spaces provided. 1. s = 30.0 cm 2. s = 20.0 cm C C F F s' = ____ h' = ____ s' = ____ h' = ____ 3. s = 15.0 cm 4. s = 10.0 cm C C F F s' = ____ h' = ____ s' = ____ h' = ____ 5. s = 5.00 cm 6. s = 10.0 cm C F C F s' = ____ h' = ____ s' = ____ h' = ____ ADDITIONAL INVESTIGATIONS: 1. Devise and carry out a procedure to measure the focal length of a concave spherical mirror. 2. Mount a concave spherical mirror, a light source for an object, and an image screen on an optical bench. Using this apparatus, make measurements to verify the mirror equation and the magnification equation for the mirror.
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(1) An object is placed in front of a concave spherical mirror with focal length f = 20.0 cm. Find the: • image distance (di) • orientation (upright or inverted) • type of image (real or virtual) • magnification (m) of the image using a precise ray diagram and then the mirror equation for the following three object distances: (a) do = 40.0 cm [answer: inverted, real, di = 40.0 cm (mirror equation result), m = -1.0 (mirror equation result)] (b) do = 30.0 cm [answer: inverted, real, di = 60.0 cm (mirror equation result), m = -2.0 (mirror equation result)] (c) do = 10.0 cm [answer: upright, virtual, di = -20.0 cm (mirror equation result), m = +2.0 (mirror equation result)]
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1. An object is placed 11.0 cm in front of a concave mirror with radius of curvature of 30.0 cm. a. What is the focal length of the mirror? b. What is the image distance? c. What is the magnification? d. Is the image (circle the answer): real or virtual? upright or inverted? enlarged or reduced in size? e. Draw a ray diagram. f. If a different object, 10.0 cm tall, is placed in front of the mirror and the image appears inverted and 2.00 cm tall, how far from the mirror was that object placed?
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