The objective lens in a microscope with a 17.0 cm long tube has a magnification of -50.0 and the eyepiece has a magnification of
20.0. (a) What is the focal length of the objective? (b) What is the focal length of the eyepiece?
1 answer:
Answer:
(a) 0.34 cm
(b) 1.32 cm
Explanation:
Given that, 

And the length of objective lens in a microscope

And we have d of the eyepiece is 25 cm.
(a) Focal length of the objective is,

Therefore, objective lens's focal length is 0.34 cm.
(b) Focal length of an eyepiece,

Therefore, eyepiece's focal length is 1.32 cm.
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