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PHYSICS

JAMB 2020 - Question 31

Physics 2020 JAMB Past Questions - Question 31: An astronomical telescope is said to be normal adjustment when the

Choose the correct answers from the options given.

An astronomical telescope is said to be normal adjustment when the

A: eye is accomodated

B: focal length of objective lens Is longer than that of eyepiece

C: final image is at the near point of the eye

D: final image is at infinity

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Correct Answer

Explanation

An astronomical telescope is said to be in normal adjustment when the image of a distant object is formed at infinity. This means that the light rays coming from the object are parallel when they reach the eyepiece of the telescope.