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

Define : Optical centre and focal length of a lens.

Focal length of an equiconvex lens is 20 cm. If we cut it once perpendicular to principal axis in and then along principal axis. Then, focal length of each part will be:

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

Fill in the blank spaces with appropriate answers: A double convex lens of focal length 'f' is cut at 90^@ to its principal axis into two identical component lenses. The focal length of each component lens is _________.

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

A convex lens has a focal length f . It is cut into two parts along the dotted line as shown in figure. The focal length of each part will be