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Standard IX
Physics
Telescopes
Question

You are given two convex lenses of focal lengths 5 cm and 25 cm. Which one of these would you like to use as an objective in a telescope? Give reasons for your answer.

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Solution
Verified by Toppr

Focal length
25 cm = objective lens
5 cm = eyepiece

In telescope objective lens have large focal length than eyepiece.

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