The power of a lens is -5D.
(i) Find its focal length.
(ii) Name the type of lens.

The power of a lens is -5 D. Find its focal length.

The power of a lens is -5 D. Name the type of lens.

The power of lens is P=1/(f) where f is focal length of the lens. The dimensions of power of lens is

The dispersive power of the material of a lens is 0.04 and the focal length of the lens is 10cm . Find the difference in the focal length (in mm) of the lens for violet and red colour.

The power of lens is P=1/(f') where f is focal length of the lens. The dimensions of power of lens is

Find the focal length of the lens shown in Fig.

What do you mean by linear magnification produced by mirrors ? The power of a lens is +2.5 D . What kind of lens is it and what is its focal length ? Draw a ray diagram of an image when an object is placed on the principal axis of a convex lens between focus and optical centre.

The length of the compound microscope is 14 cm. The magnifying power for relaxed eye is 25 . If the focal length of eye lens is 5 cm , then the object distance for objective lens will be

Find the focal length of the lens shown in the Fig..