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The focal lengths of the lenses of the o...

The focal lengths of the lenses of the objective and eyepiece of a microscope are 2 cm and 5 cm respectively. The distance between them is 20 cm . At what distance from the objective should the object be placed so that the final image is formed 25 cm from the eyepiece ? what will be the magnification ?

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2.3 cm, 41.5
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