If a spherical lens has a power of, `-0.25` D, the focal length of this lens will be:

Power of a lens is 4D, then the focal length of the lens will be_____

The power of lens depends on the focal length of the lens

A person use a spectancle of power of lens - 1.25 D. Find the focal length of the lens ?

A diverging lens has a focal length of 0.10 m. The power of this lens will be:

If the power of a lens is 0.1 D, its focal length is

A doctor has prescribed lens of power + 1.5 D . Find the focal length of the lens. Is the prescribed lens diverging or converging ?

A doctor has prescribed lens of power + 1.5 D . Find the focal length of the lens. Is the prescribed lens diverging or converging ?

Power of a lens is -4D, then its focal length is