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With the help of a ray diagram explain the working of a reflecting telescope. Mention two advantages

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With the help of a ray diagram explain the working of a reflecting telescope. Mention two advantages of a reflecting telescope over a refracting telescope.

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Advantages:

(i) A large aperture is not required to focus incoming light, hence it is easy to manufacture.

(ii) No spherical aberration exists and thus a clear image is formed.

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