A man stands in front of a large vertical plane mirror. His height is \( 1.8 \mathrm{~m} \). The...

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A man stands in front of a large vertical plane mirror. His height is \( 1.8 \mathrm{~m} \). The distance of image from the man is \( 4 \mathrm{~m} \). At what distance is the man standing from the mirror?
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