Question
Two rays A and B being reflected by a mirror and going as A' and B'. The mirror:
  1. Is plane.
  2. Is convex.
  3. Is concave.
  4. May be any spherical mirror.

Answer

  1. Is plane.

Explanation:

Here initially A & B is parallel to each other after reflection by teh plane mirror A' & B' goes Parallel to each other.

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