A point on the principal axis of a lens, to which light rays parallel to the principal axis converge after passing through the lens, is ............

Centre of curvature

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Origin

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Focus

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Optical centre

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Solution

The correct option is C Focus
A point on the principal axis of a lens, to which light rays parallel to the principal axis converge after passing through the lens, is called focus of the lens.

Answer-(C).

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Similar questions

A ray of light after refraction through a lens emerges parallel to the principal axis of the lens. The incident ray passes through :

(a) its optical centre

(b) its first focus

(d) the centre of curvature of the first surface.

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