Problem 3: A near-sighted person might correct his vision by wearing diverging lenses with focal length f= -50 cm. When wearing his glasses, he looks not at actual objects but at the virtual image of those objects formed by his glasses. Suppose he looks at a 12 cm long pencil held vertically 2.0 m from his glasses. a. Use ray tracing to determine the location and height of the image. Clearly mark the object, image, object distance, image distance. b. Show your calculations. c. Write down the image characteristics.
Problem 3: A near-sighted person might correct his vision by wearing diverging lenses with focal length f= -50 cm. When wearing his glasses, he looks not at actual objects but at the virtual image of those objects formed by his glasses. Suppose he looks at a 12 cm long pencil held vertically 2.0 m from his glasses. a. Use ray tracing to determine the location and height of the image. Clearly mark the object, image, object distance, image distance. b. Show your calculations. c. Write down the image characteristics.
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Transcribed Image Text:Problem 3: A near-sighted person might correct his vision by
wearing diverging lenses with focal length f= -50 cm. When
wearing his glasses, he looks not at actual objects but at the
virtual image of those objects formed by his glasses. Suppose
he looks at a 12 cm long pencil held vertically 2.0 m from his
glasses.
a. Use ray tracing to determine the location and height of
the image. Clearly mark the object, image, object
distance, image distance.
b. Show your calculations.
c. Write down the image characteristics.
Normal vision
Myopia
Correction
with lens
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