A light passing through a point A of a convex lens undergoes zero deviation after refraction. Identify point A.
A light ray passing through the optic centre of a convex lens will pass through ___ after refraction.
A ray of light after refraction through a lens emerges parallel to the principal axis of the lens. The incident ray passes through :
(a) its optical centre
(b) its first focus
(c) its second focus
(d) the centre of curvature of the first surface.
A ray of light incident on the optical centre of a spherical lens, after refraction passes through: