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Pole of a mirror

Two spherical...

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Two spherical mirrors (convex and concave) having the same focal length of36 cm are arranged so that their optical axes coincide. The separation between the mirrors is 1 m. At what distance from the concave mirror should an object be placed so that its images formed by the concave and convex mirror independently are identical in size? (A) 86 cm in front of concave mirror (B) 76 cm in front of the concave mirror (C) 56 cm in front of concave mirror (D) None of these

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