While establishing the mirror formula for a concave mirror
PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
While establishing the mirror formula for a concave mirror, which one of the following simplifying assumptions is essential?
(a) The object is placed at an infinite distance from the mirror
(b) Incident rays are parallel to the principal axis
(c) Incident rays make very small angles with the principal axis
(d) The aperture of the mirror is very large