Saved Bookmarks
| 1. |
What is terminology of concave mirror and convex mirror |
| Answer» \tSome terms related to spherical mirrors:\tThe centre of curvature (C) of a spherical mirror is the centre of the hollow sphere of glass, of which the spherical mirror is a part.\tThe radius of curvature (R) of a spherical mirror is the radius of the hollow sphere of glass, of which the spherical mirror is a part.\tThe pole (P) of a spherical mirror is the centre of the mirror.\tThe principal axis of a spherical mirror is a straight line passing through the centre of curvature C and pole P of the spherical mirror.\tThe principal focus (F) of a concave mirror is a point on the principal axis at which the rays of light incident on the mirror, in a direction parallel to the principal axis, actually meet after reflection from the mirror.\tThe principal focus (F) of a convex mirror is a point on the principal axis from which the rays of light incident on the mirror, in a direction parallel to the principal axis, appear to diverge after reflection from the mirror.\tThe focal length (f) of a mirror is the distance between its pole (P) and principal focus (F).For spherical mirrors of small aperture, R = 2f. | |