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Reflecting Telescope

a Draw a ray ...

Question

(a) Draw a ray diagram showing the formation of image by a reflecting telescope.
(b) Write two advantages of a reflecting telescope over a refracting telescope.

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Solution

(a)
(b) Advantages of a reflecting telescope over a refracting telescope-
(1) The image is free from chromatic aberration.
(2) Spherical aberration can be eliminated by using parabolic mirror.

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