The focus of a concave mirror is a point on the …………… through which the light rays incident …………… to the principal axis pass after reflection from the mirror.

1. centre of curvature, perpendicular
2. principal axis, parallel
3. principal axis, perpendicular
4. aperture, parallel

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 concave mirror has a …………… focus, whereas a convex mirror has a …………… focus.

1. real and virtual, real
2. real, virtual
3. virtual, real
4. virtual, real and virtual

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