A hypermetropic person whose near point is at `100 cm` wants to read a book at `25 cm`. Find the nature and power of the lens needed.

A hypermetropic person has near point farther away from the normal near point (25 cm).

A person whose far-point is at 30cm wants to read at 50cm . The power of the lens should be

A hypermetropic person has a near point at 75 cm. Determine the nature and power of the lens required to rectify the defect.

A person is unable to see objects nearer than 50 cm. He wants to read a book placed at a distance of 25 cm. Find the nature, focal length and power of the lens he requires for his spectacles.

A certain myopic person has a far point of 150 cm. If he is able to read a book at 25 cm, while wearing the glasses, is his near point less than 25 cm. ?