Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.

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Solution

Pole:The geometric centre of the spherical surface of mirror is called the pole of mirror.
Principal axis:It is the straight line joining the pole of the mirror to its centre of curvature.
Centre of curvature:The centre of curvature of a mirror is the centre of the sphere of which the mirror is a part.

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Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.

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Pole, Centre of curvature, Radius of curvature, Principal axis.

Show them on separate diagrams for each of the concave and convex mirrors.

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