Question

A student sitting at the back of the classroom cannot read clearly the letters written on the blackward. What advice will a doctor give to her ? Draw ray diagram for the correction of this defect.

Answer 1

The student who can not read clearly the letters written on blackboard is suffereing from myopia (short sightedness). A doctor will advise her to wear spectacles with a concave lens of suitable power. For ray diagram, ( c)
.