Diffused reflection occurs at a _______ surface.   rough   smooth   polished   Hint Half-n-half Clue   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.   less than 5 cm   exactly 5 cm   more than 5 cm   Half-n-half Clue   _______ reflection occurs at a smooth polished surface.   Irregular   Regular   Diffused   Half-n-half Clue   A real image is always erect.   True   False   When a convergent beam of light is incident on a plane mirror, it is reflected back as a _______ beam.   convergent   divergent   parallel   Half-n-half Clue