People who do very detailed work close up, such as jewellers, often can see objects clearly at much closer distance than the normal 25 cm. (a) What is the power in D of the eyes of a woman who can see an object clearly at a distance of only 7.70 cm? (Assume the lens-to-retina distance is 2.00 cm.) ______ D (b) What is the size in mm of an image of a 5.00 mm object, such as lettering inside a ring, held at this distance? (Include the sign of the value in your answer.) _____mm (c) What would the size of the image be in mm if the object were held at the normal 25.0 cm distance? (Include the sign of the value in your answer.) _____mm
People who do very detailed work close up, such as jewellers, often can see objects clearly at much closer distance than the normal 25 cm. (a) What is the power in D of the eyes of a woman who can see an object clearly at a distance of only 7.70 cm? (Assume the lens-to-retina distance is 2.00 cm.) ______ D (b) What is the size in mm of an image of a 5.00 mm object, such as lettering inside a ring, held at this distance? (Include the sign of the value in your answer.) _____mm (c) What would the size of the image be in mm if the object were held at the normal 25.0 cm distance? (Include the sign of the value in your answer.) _____mm
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4.5-2)
People who do very detailed work close up, such as jewellers, often can see objects clearly at much closer distance than the normal 25 cm.
(a)
What is the power in D of the eyes of a woman who can see an object clearly at a distance of only 7.70 cm? (Assume the lens-to-retina distance is 2.00 cm.)
______ D
(b)
What is the size in mm of an image of a 5.00 mm object, such as lettering inside a ring, held at this distance? (Include the sign of the value in your answer.)
_____mm
(c)
What would the size of the image be in mm if the object were held at the normal 25.0 cm distance? (Include the sign of the value in your answer.)
_____mm
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