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In the shown figure two long plane mirro...

In the shown figure two long plane mirror are kept parallel to each other with their reflecting side facing one another. A point object 'O' is situated at the distance of 20 cm from A then : (A) distance of first image formed in A is 50 cm from B. (B) distance between fifth image formed in the two mirrors is 3 m (C) distance between fifth image formed in the two mirrors is 240 cm (D) total of infinite images are formed in the two mirrors

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