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An object of size \(7.0\ cm\) is placed at \(27\ cm\) in front of a concave mirror of focal length \(18\ cm\). At what distance from the mirror should a screen be placed so that a sharply focused image can be obtained? Find the size and nature of the image.
  
Mirror formula is,
Magnification is,
Image distance (\(v\)) \(=\)  \(cm\)
 
Magnification (\(M\)) \(=\)
 
Height of the image (\(h_i\)) \(=\)  \(cm\)
 
Nature of the image is,
Important!
Note: Enter your answers with no decimal digits.