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The astronomical telescope consists of objective and eye-piece. The focal length of the objective, is

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The astronomical telescope consists of objective and eye-piece. The focal length of the objective, is

(a) shorter than that of the eye-piece

(b) greater than that of the eye-piece

(c) equal to that of the eye-piece

(d) five times shorter than that of the eye-piece.

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1 Answer

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Best answer

Correct option (b) greater than that of the eye-piece

Explanation:

In astronomical telescope, fo >fe

Magnifying power = fo/fe. This becomes large when fo >fe.

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