Question

what is the mean proportional of 4 and 16 9 7 8 64​

Answer 1

tomorrow's oral test :

1. Describe myopia with neat label diagram.

2. Describe hypermetropia with neat labelled diagram.

3. Describe presbyopia.

4. 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?

5. What is the far point and near point of the human eye with normal

vision?