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OL PH 223 24.1-3

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by

Richard Datwyler

on 22 March 2016

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Transcript of OL PH 223 24.1-3

A converging lens with a focal length of 40 cm and a diverging lens with a focal length of -40 cm are 160 cm apart. A 2.0 cm object is 60 cm in front of the converging lens.
A 12 - mm focal length lens has a 4.0 mm diameter aperture. What is the aperture diameter of an 18 - mm focal length lens with the same f-number?
A camera takes properly exposed photos at f/5.6 and 1/125 s. What shutter speed should be used if the lens is changed to f/4.0
Ray has contact lenses with the prescription + 2.0 D.
a. What eye condition does he have?
b. What is his near point without the lenses?
Ellen wears eyeglasses with the prescription -1.0 D.
a. What eye condition does she have?
b. What is her far point?
find position and height of image.
Ray tracing
Hyperopia
Myopia
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