A far-sighted man can see clearly at a distance of `1.0m`. The power of the lens that would make him see clearly at a distance of `0.2m` is

A person can see clearly upto 1 m. The nature and power of the lens which will enable him to see things at a distance of 3 m is

A person who can see things most clearly at a distance of 10 cm . Requires spectacles to enable to him to see clearly things at a distance of 30 cm. What should be the focal length of the spectacles ?

A person who can see things most clearly at a distance of 10 cm . Requires spectacles to enable to him to see clearly things at a distance of 30 cm. What should be the focal length of the spectacles ?

A person who can see objects clearly at a distance of 10cm , requires spectacles to be able to see clearly objects at a distance of 30 cm. what type of spectacle should he use? Find the focal length of the lens.

A nearsighted man can clearly see objects up to a distance of 1.5m. Calculate the power of the lens of the spectacles necessary for the remedy of this defect.

A nearsighted man can clearly see objects up to a distance of 1.5m. Calculate the power of the lens of the spectacles necessary for the remedy of this defect.

A nearsighted man can clearly see objects up to a distance of 1.5m. Calculate the power of the lens of the spectacles necessary for the remedy of this defect.

If a person can sees clearly at a distance of 100 cm, then find the power of leris used to see object at 40 cm.