with the help of a suitable diagram,explain the meaning of term:
a) centre of curvature
b) optical centre
c) focus
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CENTRE OF CURVATURE: The reflecting surface of a spherical mirror form a part of sphere. It has a centre which is known as Centre of Curvature. It is denoted by (C). Optical Centre :It is the central point of lens through which a ray of light passes without suffering any deviation.
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