Question

With the help of a suitable diagram, explain the meaning of terms:
(a) centres of curvature (b)optical centre
(c) focus​

Answer 1

Answer:

(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) Optical Centre : The point on a lens through which a ray of light passes without deviation is called the optical centre.

(c) Focus : Focus is the point where light rays originating from a point on the object converge.

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