Question

tell me some definitions related to lenses​

Answer 1

Centre of curvature (C): The centre of sphere of which lens is a part. Radius of curvature (R): The radius of sphere of which lens is a part. ... Optical centre (O): The point on the principal axis of a thin lens through which a ray of light passes undeviated

Answer 2

Answer:

Some definitions are related to lenses are given below-

(1). Centre of curvature:

The centre of sphere of which lens is a part.

(2). Radius of curvature:

The radius of sphere of which lens is a part.

(3). Principle axis:

Line joining the centre of curvatures of two lenses.

(4). Optical centre:

The point on the principle axis of a thin lens through which a ray of light passes undeviated.

(5). Aperture:

The effective diameter of the circular outline of a spherical lens is called its aperture.

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