Far point of a person is 5 m. In order that he has normal vision what kind of spectacles should he use ?

The near point of a person is 75 cm. In order that he may be able to read book at a distance 30 cm. The power of spectacles lenses should be

The near point of a person is 75 cm. In order that he may be able to read book at a distance 30 cm. The power of spectacles lenses should be

The near point of a person is 50 cm and the far point is 1.5m . The spectacles required for reading purpose and for seeing distant objects are respectively

The near point of a man is at a distance of 200 cm from his eyes. What spectacles should he use in order to read a print 25 cm away from his eyes ?

A person can see distinctly up to a distance of 2 m and no further. To see distinctly up to a long distance what type of spectacles should he use? What will be the power of the lens of the spectacles?

For a person near point of vision is 100 cm. Then the power of lens he must wear so as have normal vision, should be

What is the far point and near point of human eye with normal vision?