The Focal Lengths of the Objective and the Eyepiece of a Microscope

question 74

Multiple Choice

The focal lengths of the objective and the eyepiece of a microscope are 0.5 cm and 2.0 cm, respectively, and their separation adjusted for minimum eyestrain is 6.0 cm. The near-point distance of the person using the microscope is 25.0 cm. If the microscope is focused on a small object, what is its final magnification?

• A) -44
• B) -66
• C) -77
• D) -88
• E) -100

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