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in Olympiad by (65.8k points)

A concave mirror of focal length f and diameter d (d << f) is kept horizontally and filled with water. Rays of light parallel to the mirror axis are incident on it. After reflection, the rays will focus close to

(A) 0.25 f 

(B) 1.33 f

(C) f 

(D) 0.75 f

1 Answer

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Best answer

Correct option: (D) 0.75 f

Explanation: 

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