If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished

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If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it ? Draw a ray diagram to justify your answer. Where and why do we generally use this type of mirror ? 

Answer

Use

As rear view mirror in vehicles/ Also in Malls, Hotels, Airports for security reasons.

Why

  • Forms erect image,
  • Wider field of view.
Exam Year: 2015