define cocave mirror explanation in brief
Answers
Answer:
A concave mirror, or converging mirror, has a reflecting surface that is recessed inward (away from the incident light). Concave mirrors reflect light inward to one focal point. They are used to focus light.
Answer:
Concave Mirror
If a hollow sphere is cut into parts and the outer surface of the cut part is painted, then it becomes a mirror with its inner surface as the reflecting surface. This type of mirror is known as a concave mirror.
Characteristics of Concave Mirrors
Light converges at a point when it strikes and reflects back from the reflecting surface of the concave mirror. Hence, it is also known as a converging mirror.
When the concave mirror is placed very close to the object, a magnified and virtual image is obtained.
However, if we increase the distance between the object and the mirror then the size of the image reduces and a real image is formed.
The image formed by the concave mirror can be small or large or can be real or virtual.