Compute the focal length of the eyepiece

Reference no: EM13694178

Solve the following problem given below:

Problem: A compound microscope has a 18-cm-long barrel and an objective lens with a focal length of 8.0 mm. It is adjusted for minimum eyestrain for persons with a near point of 25 cm.

A- What is the focal length of the eyepiece to give a total magnification of 240?

I don't know how to get that answer for the above problem. Please help! Thanks.

Reference no: EM13694178

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