A boy stands straight in front of a mirror at a distance of 30cm away from it.
He sees his erect image whose height is of his real height. The mirror he is using is
[MP PMT 1993]
Plane mirror
Convex mirror
Concave mirror
Plano-convex mirror
A boy of height 1m stands in front of a convex mirror. His distance from the mirror is equal its focal length. The height of his image is