A double convex lens of focal length is cut into 4 equal parts One cut is perpendicular to the axis and the other is parallel to the axis of lens. The focal length of each part is

The focal length of a convex lens is

If a equiconvex lens of focal length f is cut into two halves by a plane perpendicular to the principal axis, then

A symmetrical biconvex lens of focal length f is cut into four identical pieces along its principal axis and to the perpendicular to principal axis. The focal length of one of four pieces is

Assertion: A boconvex lens of focal length 10 cm is split into two equal parts by a plane parallel to its principle axis. The focal length o fthe each part will be 20 cm . Reason: Focal length does not depend on the radii of curvature of two surfaces.

An equiconvex lens of glass of focal length 0.1 metre is cut along a plane perpendicular to principle axis into two equal parts. The ratio of focal length of new lenses formes is

An equiconvex lens of focal length 15 cm is cut into two equal halves in thickness. What is the focal length of each half ?