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Reflecting Telescope

In an astrono...

Question

In an astronomical telescope of refracting type:

A

Eyepiece has greater focal length

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B

Objective has greater focal length

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C

Objective and eyepiece have equal focal length

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D

Eyepiece has greater aperture than the objective

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Solution

The correct option is B Objective has greater focal length
An astronomical telescope of refracting type has objective of greater focal length to have more surface area for incoming light from celestial bodies.

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