1.

A ray light incident on a lens parallel to its principal axis, after refraction passes through or appears to come from : (a) its first focus (b) its optical centre (c) its second focus (d) the centre of curvation of its second surface.

Answer»

A ray light incident on a lens parallel to its principal axis, after refraction passes through or appears to come from :

(a) its first focus

(b) its optical centre

(c) its second focus

(d) the centre of curvation of its second surface.



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