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2. The diameter of the front meniscus lens of the model eye is approximately 2cm. If...

2. The diameter of the front meniscus lens of the model eye is approximately 2cm. If the diameter of the aperture of a diaphragm placed in front of the meniscus lens is 1cm, how much would the area through which light passes into the eye be decreased? How much less light would be allowed to enter the eye? How much less bright would the image be?

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