Consider the case, in which a mirror forms a real image of
height 4 cm of an object of height 1cm placed 20 cm away from
the mirror.
1. The distance from the object to its image is
(a) 20 cm (b) 80 cm (c) 60 cm (d) 70 cm
2. The focal length of mirror is
(a) -16 cm (b)12 cm (c) -15 cm (d) 10 cm
3. The radius of curvature of the mirror is
(a) -16 cm (b) -14 cm (c) -30 cm (d) -32 cm
4. The magnification of the image is
(a) 3 (b) -6 (c) -4 (d) 8
5. At what distance must an object be placed from mirror in
order that a real image double its size may be obtained?
(a) -24 cm (b) 32 cm (c) -40 cm (d) 45 cm