A jeweler examines a diamond with a simple magnifier with a focal length of 8.0cm. What magnification is obtained if the gem is positioned so that its image is at the normal near point, i.e., 25cm? How far from the lens must the diamond be held?

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A: solutionGivenfocal length of objective lens(f1)=8 cmfocal length of eyepiece lens(f2)=20 cmdistance…

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A: We use the real is positive sign convention

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Q: diameter of the red blood cell?

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Q: A biology student uses a simple magnifier to examine the structural features of an insect's wing.…

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Q: A farsighted person can read printing as close as 25.0 cm when she wears contacts that have a focal…

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