A \( 1 \mathrm{~cm} \) high object is placed at \( \overline{2} 0 \mathrm{~cm} \) in front of a ...

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A \( 1 \mathrm{~cm} \) high object is placed at \( \overline{2} 0 \mathrm{~cm} \) in front of a concave mirror of focal length \( 15 \mathrm{~cm} \). Find the position and nature of the image.
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