For the image of an object to be formed 5 cm behind a plane mirror, the object must be placed _______ in front of the plane mirror.   exactly 5 cm   more than 5 cm   less than 5 cm   Hint Half-n-half Clue   The presence of moisture hinders the reflection of light from taking place.   True   False   When a parallel beam of light is incident on a plane mirror, it is reflected back as a _______ beam.   convergent   divergent   parallel   Half-n-half Clue   _______ reflection occurs at a smooth polished surface.   Diffused   Regular   Irregular   Half-n-half Clue   A real image is always erect.   True   False