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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
Photoreceptor cells are present in __________.
(A) blind spot
(B) retina
(C) cochlea
(D) cornea
State whether the following statements are true (T) or false (F). If false, correct them by changing any one single word in each.
Semi-circular canals are concerned with static (positional) balance.
Where is the Cochlea located? Briefly mention its function.
What is the function of three tiny bones in the ear ?
Draw a labeled diagram of the inner ear. Name the part of the inner ear that is responsible for static balance in human beings.
The hearing range of the human ear is ______.
The Eardrum moves inward when a rarefaction reaches it.
Categorise the following parts under (i) external, (ii) middle and (iii) internal ear.
Ear drum, hammer, pinna, cochlea, anvil, stirrup, eustachian tube, tympanum, oval window, semi-circular canals.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Semi-circular canal : Ampulla :: Cochlea : ______.
Give reason:
Three small bones of ear ossicles are advantageous as compared to one single bone for hearing.
