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प्रश्न
You do not enjoy watching a movie from a very short distance from the screen in a cinema hall. Why?
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उत्तर
Our eyes are designed to focus at a great variety of distances. To focus constantly at a short distance can make the lens focusing muscles fatigued. Therefore, we do not enjoy watching a movie from a very short distance from the screen in cinema hall.
संबंधित प्रश्न
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?
Name the defect of vision which makes the eye-lens cloudy resulting in blurred vision.
What is the other name of old age hypermetropia?
Name one defect of vision (or eye) which cannot be corrected by any type of spectacle lenses.
Name an old age eye defect. What happens in it?
What is meant by optical illusion? Give one example.
Draw a ray diagram to show how Hypermetropia is defect can be corrected using a lens.
Choose the correct answer :
Presbyopia is a disease of _____________
Give Reason:
Older people require glasses to read and write.
The diagram given below represents the cross-section of the human eye:
(i) Name the parts labeled 1—12.
(ii) What is the function of the part marked ‘10’?
(iii) What would happen if part ‘5’ is damaged or cut?
