What is the focal length of the objective lens
The distance between the objective lens and the eyepiece of a microscope is 20 cm. If the eyepiece has a magnification of 20 and the total magnification of the microscope is |m| = 110, what is the focal length of the objective lens?
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The magnifications produced by the mirrors are mA = 4.0 and mB = 1.7. Find the ratio fA/fB of the focal lengths of the mirrors.
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Consider a refracting telescope with an objective lens of focal length fobj = 1.4 m and an eyepiece with focal length feyepiece = 7 cm. What is the angular magnification of this telescope?
If the eyepiece has a magnification of 20 and the total magnification of the microscope is |m| = 110, what is the focal length of the objective lens?
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An olive is at the bottom of a glass of alcohol (n = 1.36), 5.21 cm beneath the surface. Above the alcohol is air. To a person in the air, who is directly above the olive, what is the apparent depth d' of the olive.
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