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Lens Formula and Magnification

Name the lens...

Question

Name the lens/lenses which is/are being used in a refracting telescope?

A

An eyepiece

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B

An objective lens

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C

An objective and an eyepiece

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D

There are many lenses

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Solution

The correct option is C
An objective and an eyepiece

A simple or more specifically a refracting telescope has biconvex lens to form the image. They are an objective and an eyepiece. The objective lens has more focal length than the eyepiece.

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