Draw ray diagram in each of the following cases to show what happens after reflection to the incident ray when
(a) it is parallel to the principal axis and falling on a convex mirror.
(b) it is falling on a concave mirror while passing through its principal focus.
(c) it is coming oblique to the principal axis and falling on the pole of a convex mirror.
(a) it is parallel to the principal axis and falling on a convex mirror
(b) it is falling on a concave mirror while passing through its principal focus
(c) it is coming oblique to the principal axis and falling on the pole of a convex mirror.