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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
What is myopia?
Name the defect of vision in a person:
whose far point is less than infinity
What is the far point of a person suffering from myopia (or short-sightedness)?
The defect of vision which cannot be corrected by using spectacles is:
(a) myopia
(b) presbyopia
(c) cataract
(d) hypermetropia
Name an old age eye defect. What happens in it?
Given below is a diagram depicting a defect of the human eye? Study the same and answer the question that follow :
Name the type of lens used to correct this eye defect.
Explain the Term: Presbyopia
What type of lens is used to correct Hypermetropia?
A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of power:
Observe the following diagram and answer questions following it:
- Identify the defect of vision shown.
- List its two causes.
- Name the type of lens used for the correction of this defect.
