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The magnifying power of a telescope is 9...

The magnifying power of a telescope is `9.` When it is adjusted for parallel rays the distance between the objective and eyepiece is `20cm`. The focal lengths of lenses are

A

`10cm, 10cm`

B

`10 cm,5cm`

C

`18cm,2 cm`

D

`11 cm, 9 cm`

Text Solution

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The correct Answer is:
C
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