The far point of a myopic eye is at `50 cm`. Calculate the power of the lens to correct his vision.

The near point of a hypermetropic eye is 50 cm . Calculate the power of the lens to enable him to read a book at 40 cm ?

The far point of a myopic person is 6 metre . Calculate the power of the lens he requires for distant vision.

The far point of a myopic person is 120 cm in front of the eye. Calculate the power of the lens required to enable the person see distant object clearly.

A person wants to read a book placed at 20 cm whereas the near poit of his eyes is 50 cm. Calculate the power of the lens required.

The power of myopic eye is ………….

A person wants to read a book placed at 20 cm , whereas near point of his eye is 30 cm . Calculate the power of the lens required.

The far point of a myopic eye is 100 cm. What is the focal length of the lens required to see very distant (normal far point) objects clearly?

Far points of myopic eye is 250 cm, then the focal length of the lens to be used will be