For an incident ray directed towards center of curvature of a spherical mirror, the reflected ray:

1. retraces it's path
2. passes through the focus
3. passes through the pole
4. becomes parallel to the principal axis

A ray either incident from the focus (or converging at the focus), after reflection from a spherical mirror :

1. becomes perpendicular to the principal axis
2. becomes parallel to the principal axis
3. becomes normal to the focus
4. passes through the centre of curvature

For a concave mirror, when the object is at the centre of curvature, the place and nature of the image formed is :

1. at focus, real, inverted
2. at focus, virtual, inverted
3. at centre of curvature, real, inverted, diminished
4. at centre of curvature, real, same size as that of the object

For a concave mirror, when the object is at focus, the size of the image formed is:

1. magnified
2. highly magnified
3. diminished
4. of the same size