Question

a doctor prescribed power of the lens as + 2D to correct the defect of a persond.

1. what is the eye defect of the person?
2. which lens is suggested by the doctor to correct the eye defect of the person?
3. find the focal length of the lens suggested by the doctor?
4. what is the reason for the eye defect of the person?​

Answer 1

Answer

1. hypermetropia

2. Biconvex lens

3. power of lens = 2D

Power of lens formula = 1/ f( in meters ) or 100/ f( in centimetres)

= f = 1/p

= 1/2 meters or 100/2 = 50 centimetres

4. due to the eye being too short or cornea being less curved