Q.) Rays from Sun converge at a point 15 cm in
front of a concave mirror. Where should an
object be placed so that size of its image is
equal to the size of the object?
(a) 30 cm in front of the mirror
(b) 15 cm in front of the mirror
(c) Between 15 cm and 30 cm in front of the mirror
(d) More than 30 cm in front of the mirror
Ans. (a) 30 cm in front of the mirror
