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प्रश्न
Have a look at the posture of this girl who is reading a book and answer the questions which follow:
 |
- Name the problem she is facing.
- What are the two conditions shown in sections A and B of the eye as applicable to her.
- What kind of reading glasses does she need?
 |
 |
| A | B |
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उत्तर
- Myopia
- Section A depicts hyperopia, which occurs when the picture forms behind the retina. Section Bis depicts myopia, a condition where the picture forms before the retina.
- She requires reading glasses with a concave lens.
संबंधित प्रश्न
What is the far point and near point of the human eye with normal vision?
A student cannot see a chart hanging on a wall placed at a distance of 3 m from him. Name the defect of vision he is suffering from. How can it be corrected? Draw ray diagrams for the (i) defect of vision and also (ii) for its correction.
What is Hypermetropia (far sightedness)?
Observer the following diagram and answer the questions.
a) Which eye defect is shown in this diagram?
b) What are the possible reasons for this eye defect?
c) How this defect is corrected, write it in brief?
Select the odd one in the following series:
Endolymph, Tympanic membrane, Semi-circular canal, Blind spot.
Name an old age eye defect. Why is it caused?
Explain the Term: Presbyopia
Explain the Term: Cataract
What type of lens is used to correct Astigmatism?
Write scientific reason.
Nearsightedness, this defect can be corrected by using spectacles with concave lens.
