5.
With the help of a suitable diagram, explain the meaning of the following terms
for a concave mirror.
(a) centre of curvature
(b) pole
(c) principal axis
(d) focus
Answers
Answered by
2
Explanation:
(a) Centre of curvature: Centre of curvature of a spherical mirror is the centre of the hollow sphere of a glass of which the mirror is a part.
(b) Pole: The centre of a spherical mirror is called its pole.
(c Principal axis: The straight line passing through the centre of curvature and pole of a spherical mirror is called its principal axis.
d) Focus. When rays from infinity come in parallel to the optical axis of a spherical mirror, they are bent so that they either converge and intersect in at a point, or they seem to diverge from a point. The point of convergence or divergence is called the focus.
Similar questions