Question

what is concave mirror

Answer 1

A concave mirror has a shape with a thinner middle and thicker sides in relation to a flat plane. People who cannot see objects in focus at a distance but can see objects close up (nearsightedness or myopia) use concave lenses to bring the farther objects in focus. Now look at your spoon again from the other side. You will see that the sides curve up closer to you and the middle is farther away from your eye. You will also see that your image is upside down. This business side of a spoon represents a concave mirror.

Answer 2

a concave mirror is a mirror with a curved reflecting surface .....