Question

Define the terms related to spherical lense

1. Optical centre
2. Centre of curvature
3. Radius of curvature
4. Principal axis
5. Focal length ​

Answer 1

Answer:

1. Optical centre: The centre of the reflecting surface of the spherical lens.

2. Centre of curvature: The centre of the shpere of which the spherical lens forms a part.

3. Radius of curvature: The radius of the sphere of which the spherical lens forms a part.

4. Principal axis: A straight line passing through the optical centre and the centre of curvature of a spherical lens.

5. Focal length: A point on the principal axis at which the incident light rays parallel to the principal axis converge in a convex lens or appear to come from in a concave lens.

Hope this answer helps :)