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

A …………… mirror is made by silvering the …………… surface of a piece of a hollow sphere.

1. convex, outer
2. plane, outer
3. concave, outer
4. concave, inner

A spherical mirror is made by silvering a part of a :

1. solid metal sphere
2. hollow metal sphere
3. hollow glass sphere
4. None of the above

The correct statement(s) is/are :

(i) The radius of a sphere of which the spherical mirror is a part is called the radius of curvature.

(ii) The geometric centre of the spherical surface of a mirror is called the centre of curvature.

(iii) Principal axis is the straight line joining the pole of the mirror to its aperture.

1. (i)
2. (ii)
3. (iii)
4. None of the above