Question

Determine wheather a mirror is concave or convex or plane without touching

Answer 1

1. If image is upright, of same size and it does not change in size by moving the mirror towards or away from the face,the mirror is plane.

2. If image is upright ,magnified , and increases in size on small movement of the mirror away,the mirror is concave.

3. If image is upright ,diminished and decreases in size on small movement of the mirror away, the mirror is convex.