State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
The kinds of SPHERICAL MIRRORS are :
(i) CONCAVE MIRROR
(ii) CONVEX MIRROR
IN CONCAVE MIRROR: Silvered surface is away from centre of curvature and focal length is negative, i.e. reflecting surface is towards centre of curvature.
IN CONVEX MIRROR: Silvered surface is towards the centre of curvature and focal length is positive i.e. reflecting surface is away from thecentre of curvature. It alway forms diminished (small) image which is VIRTUAL.