A far sighted person has a near point of `60"cm"` . What power lens should be used for eye glasses such that the person can be read this book at a distance of `25` cm.

A far sighted person has a near point of 60 cm. What power lens should be used for eye glasses such that the person can read a book at a distance of 25 cm.

A far sighted person has his near point 50 cm. Find the power of lens he should use to see at 25 cm, clearly.

A far sighted person has his near point 50 cm. Find the power of lens he should use to see at 25 cm clearly.

A far-sighted person has a near point at 100 cm. What must be the power of the correcting lens?

A farsighted person has a near point of 75 cm for one eye and a near point of 100 cm for the other .What pwers should corrective lenses have to allow the person to see an object clearly at a distance of 25cm.

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

A person has near point at 60 cm . The focal length of spectacles lenses to read at 22 cm having glasses separated 2 cm from eyes is

A near-sighted person has a near point 25 cm and a far point 50 cm. Can he see clearly an object at a distance of: (i) 5 cm, (ii) 25 cm, (iii) 60 cm. Write 'Yes' or 'No' only.