Physics
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.
- (i)
- (ii)
- (iii)
- None of the above
Answer
(i)
Reason — The radius of a sphere of which the spherical mirror is a part is called the radius of curvature.
The geometric centre of the spherical surface of a mirror is called the pole of the mirror.
Principal axis is the straight line joining the pole of the mirror to its centre of curvature.
Related Questions
A …………… mirror is made by silvering the …………… surface of a piece of a hollow sphere.
- convex, outer
- plane, outer
- concave, outer
- concave, inner
A …………… mirror is made by silvering the …………… surface of a piece of a hollow sphere.
- concave, inner
- convex, inner
- convex, outer
- None of the above
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.
- centre of curvature, perpendicular
- principal axis, parallel
- principal axis, perpendicular
- aperture, parallel
For an incident ray directed towards center of curvature of a spherical mirror, the reflected ray:
- retraces it's path
- passes through the focus
- passes through the pole
- becomes parallel to the principal axis