A person can see distant signboards clearly but cannot read clearly a book which is at 25 cm from his eye.…
A person can see distant signboards clearly but cannot read clearly a book which is at 25 cm from his eye. Giving reason identify the defect. Draw a labelled ray diagram to illustrate this defect and its correction.
Solution
Eyes defect is hypermetropia. Its causes are due to
a. shortening the eye ball
b. increase in focal length of eye lens.
