Скачать или смотреть concave mirror || How to Identify a Mirror || अवतल दर्पण की पहचान || बिना स्पर्श किए || स्पर्श करके

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.
How can concave mirror be identified without touching?
If the given mirror is held near the face and the image is observed.

Plane mirror - If image is upright, of same size and it does not change in size by moving the mirror towards or away from the face.
Concave mirror - If image is upright and of bigger size and increases in size on moving the mirror away.


kanakclasses, KANAKCLASSES, DAV SCHOOL, D.A.V. SCHOOL, BOOK, EXERCISE, LESSON, kanak classes, KANAK CLASSES, how to identify type of mirror,identification of plane mirror,identification of concave mirror,identification of convex mirror, detect two way mirror,detect one way mirror,detect 2 way mirror,detect 1 way mirror, अवतल दर्पण, अवतल दर्पण की पहचान, समतल अवतल एवं उत्तल दर्पण की पहचान,light chapter physics,concave mirror,convex mirror,awtal aur utal darpan