A person can see distant objects distinctly but is unable to visualize near object in a perfect way- Predict what would be the probable cause and suggest the corrective measure for such problem.

A person can see distant objects distinctly but is unable to visualize near object in a perfect way- Predict what would be the probable casue and suggest the corrective measure for such problem.

A person with defective eyes can see the objects distinctly up to the distance 20 cm . What type of lens should be used and of what power?

A person can see distinctly any object situated in between the distance 50 cm and 300 cm. what type of spectacles are to used (i) to extend the far point up to infinity and

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 boy can see the objects distinctly only in between 15 cm and 200 cm from his eyes . What should be the power of the lens (in m^(-1) unit ) he will use to see the objects at infinity distinctly ? What will the least distance of distinct vision of his eyes with spectacles ?

A person can see distinctly any object situated in between the distance 50 cm and 300 cm. what type of spectacles are to used (ii) to bring the least distance of distinct vision at 25 cm ? What will be the rangs of distinct vision in each pair of spectacles?

A Person who can see objects clearly at a distance of 10cm, required spectacles to be able ot see clearly objects at a distance of 30cm. What types of spectacle should he use? Find the focal length of the lens.

A short-sighted person can see distinctly the object situated at a distance of 20 cm from him. What type of lens will he use to see the objects situated at a distance of 100 cm from him ? What will be the power of the lens ?

A myopic person can not see objects lying beyond 2m. What is the power of the lens required to remove this defect?

A person using spectacles having power +2.5m^(-1) can see the objects distinctly at a distance of 25 cm . What is the near point for the person ? What type of defect of vision does the eye have ?