The focal lengths of the objective and e...

The focal lengths of the objective and eye piece of a microscope are `2 cm and 5 cm` respectively, and the distance between them is `20 cm`. Find the distance of the object from the objective when the final image seen by the eye is `25 cm` from the eye piece. What is the magnifying power ?

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The correct Answer is:

`u_(0) = -2.3 cm, M = 4.15`

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