Light rays A and B fall on an optical component and come out as C and D. The optical component is a
Light falls on 'A', gets reflected, and goes to an optical instrument, that somehow converges the rays to meet at 'B', such that 'B' appears to be giving off rays. 'A' is the ______ and 'B' is the _______ .
A ray light incident on a lens parallel to its principal axis, after refraction passes through or appears to come from :
(a) its first focus
(b) its optical centre
(c) its second focus
(d) the centre of curvation of its second surface.
A ray of light incident on the optical centre of a spherical lens, after refraction passes through: