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An astronomical telescope is said to be in normal adjustment when the?

Physics
JAMB 2021

An astronomical telescope is said to be in normal adjustment when the?

  • A. eye is accommodated
  • B. focal length of an object lens is longer than that of eye piece
  • C. final image is at the near point of eye
  • D. final image is at infinity
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Correct Answer: Option D
Explanation

A normal arrangement is an arrangement where the principal focus of objective coincides with the eyepiece so that the final image is at infinity 

There is an explanation video available below.

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Explanation Video

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