Spherical lenses

With reference to spherical lenses, state the meaning of the following terms or define the following terms and draw the diagrams to illustrate the same : (1) centre of curvature (C) (2) radii of curvature (R_(1),R_(2)) (3) principal axis (4) optical centre (O) (5) principal focus (F) (6) focal length (f)

The polymer used for optical lenses is

Problems based on Lenses and Spherical refraction

Assertion : Spherical aberration occur in lenses of larger aperture. Reason : The two rays, paraxial and marginal rays focus at different points.

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