Question

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.
(a) (i)
(b) (ii)
(c) (iii)
(d) None of the above

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Answer

(a) (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.

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