Question: A microscope for viewing blood cells has an objective with a focal length of 0.50 cm and an eyepiece with a focal length of 2.5cm.

A microscope for viewing blood cells has an objective with a focal length of 0.50 cm and an eyepiece with a focal length of 2.5cm. The distance between the objective and eyepiece is 14.0cm. If a blood cell subtends an angle of 2.1 × 10-5 rad when viewed with the naked eye at a near point of 25.0cm, what angle (magnitude only) it subtends when viewed through the microscope.

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