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प्रश्न
Differentiate between Near vision and Distant vision (shape of the eye lens)
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उत्तर
| Near vision | Distant vision |
| In near vision, the shape of the eye lens is convex. | In distant vision, the shape of the eye lens is thin and less convex. |
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संबंधित प्रश्न
Explain the following:
Mechanism through which a sound produces a nerve impulse in the inner ear.
Given below is a diagram depicting a defect of the human eye, study the same and then answer the questions that follow:
(i) Name the defect shown in the diagram.
(ii) What are the two possible that cause this defect?
(iii) Name the type of lens used to correct this defect.
(iv) With the help of a diagram show how the defect shown above is rectified using a suitable lens.
State the main function of the Eustachian tube
Name the following:
The tube which connects the cavity of the middle ear with the throat.
Given below is the diagram of a part of the human ear. Study the same and answer the questions that follow:
 |
Give the collective biological term for Malleus, locus and Stapes.
Name that part of ear which vibrates when outside sound falls on it.
The figure below is the sectional view of a part of the skull showing a sense organ:
What are the parts labeled 'm', 'i' and 's'? What do these parts constitute collectively?
The part of the ear that turns pressure variations into electrical signals is ______.
The part of the ear that collects the sound from the surroundings is ______.
With reference to human ear answer the question that follow:
Name the part of the ear associated with the amplification of vibrations.
