If f = 0.5 m, what is the power of the lens?

If the focal length of a converging lens is 50 cm. What is the power of the Lens ?

The far point of a myopic person is 80 cm. In front of the eye. What is the power of the lens required to enable him to see very distant objects clearly ? In what way does the corrective lens help the person above?Does the lens magnify very distant objects?Explain.

…is the unit of power of the lens

Define power of a lens

A lens is a focal length - 0.5 m. What is the nature and power of the lens?

The far point of a myopic person in 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?