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1. What is meant by power of accommodation of the eye?
Answer:
The power of accommodation is the maximum variation of power of eyes for focusing on near and far (distant) objects.
2. A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?
Answer:
Concave lens.
3. What is the far point and near point of the human eye with normal vision?
Answer:
The far point is at infinity and near point is 25 cm from the eye.
4. A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?
Answer:
The child is suffering from myopia. He should use concave lens of suitable focal length.