A person wears eyeglasses of focal length -80cm .Where is the far point of the person?

A person wears glasses of power -2.5D . The defect of the eye and the far point of the person without the glasses are, respectively

A person wears glasses of power – 2.0 D . The defect of the eye and the far point of the person without the glasses will be

A person having a myopic eye uses a concave lens of focal length 50 cm. What is the power of the lens?

A person wears glasses of power -2.5 D . Is the person short sighted or long sighted ? What is the far point of the person without glasses ?

A person wears glasses of power - 2.5 D . Is the person short sighted or long sighted ? What is the far point of the person without glasses ?

(a) A nearsighted person cannot clearly see beyond 200 cm . Find the power of the lens needed to see objectes at large distances. (b) A farsighted person cannot see objects placed closer to 50cm . Find the power of the lens needed to see the objets at 20cm . (c) A person wears glasses of power -2.5 D . Is the person farsighted or nearsighted? What is the far point of the person without the glasses?

A person wears glasses with power -2.5 D. Without glasses the person