SPHERICAL LENSES

BEHAVIOUR OF WAVEFRONTS IN PRISMS, LENSES AND MIRROR

Problems based on Lenses and Spherical refraction

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

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)