A person cannot see clearly beyond 50 cm. Find the power of the lens to correct the vision.

A person can not see clearly objects beyond a distance of 1.2 m.Name the defect of vision he is suffering from.What would be the power of correcting lens used to restore proper vision?

The near point of a hypermetropia eye is 1 m find the power of the lens required to correct this defect . Assume that near point of the normal eye is 25 cm

A person cannot see object beyond 1.5 m distinctly . What type of lens should be used to restore proper vision?

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?

Find the power of a concave lens of focal length 2 meters?