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 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 formed is:

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

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

If a lens is cut into two pieces perpendicular to the principle axis and only one part is used the new focal length.

An equiconvex lens of focal length20 cm is cut into two equal halves perpendicular to the principal axis and kept at a separation of 10 cm co-axially. What ils the focal length of the each part is?

The equiconvex lens has focal length f. If is cut perpendicular to the principal axis passin through optical centre, then focal length of each half is

The equiconvex lens has focal length f. If is cut perpendicular to the principal axis passing through optical centre, then focal length of each half is

The equiconvex lens has focal length f. If is cut perpendicular to the principal axis passin through optical centre, then focal length of each half is