. Assertion: A biconvex lens of focal length 10 cm is split into two equal parts by a plane parallel to its principal axis


The focal length of the each part will be 20 cm.

Reason: Focal length does not depend on the radii of curvature of two surfaces.

       

 

Best Answer

Solution : Since, lens is cut into two ewual parts by a plane parallel to its principal axis, so both the part still to be biconvex.

a biconvex lens

Where R1 and R2 be the radii of curvature of two surfaces.

 

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