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प्रश्न
Name the muscles of the eye responsible for the power of accommodation.
उत्तर १
The ciliary muscles are responsible for the power of accommodation.
उत्तर २
The ciliary muscles attached to the lens controls its curvature and alters its focal length.
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संबंधित प्रश्न
How does the eye regulate the amount of light that falls on the retina?
Which. of the following has normal vision?
(a) Xc Xc
(b) Xc Y
(c) XC Xc
(d) Xc Yc
The size of the pupil becomes ______ when you see in dim light.
Match the following:
| Column I | Column II |
| (i) Myopia | (a) Converging power of eye lens becomes low |
| (ii) Hypermetropia | (b) Converging power of eye lens remains the same |
| (c) Converging power of eye lens becomes high |
The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Are these lenses thinner at the middle or at the edges?
How does the eye adjust to take account of an increase in brightness?
Name two types of cells in the retina of an eye which respond to light.
What are rods and cones in the retina of an eye? Why is our night vision relatively poor compared to the night vision of an owl?
How does the eye adjust itself to deal with light of varying intensity?
To focus the image of a nearby object on the retina of an eye:
(a) the distance between eye-lens and retina is increased
(b) the distance between eye-lens and retina is decreased
(c) the thickness of eye-lens is decreased
(d) the thickness of eye-lens is increased
Explain clearly why, a person who has lost the sight of one eye is at a disadvantage compared with the normal person who has two good eyes.
Among animals, the predators (like lions) have their eyes facing forward at the front of their heads, whereas the animals of prey (like rabbit) usually have eyes at the sides of their head. Why is this so?
With reference to the functioning of the eye, answer the question that follow:
What is the shape of the lens during distant vision?
State the main functions of the following:
Coronary Artery
Choose the correct answer.
Colour is detected by ____________
Differentiate between:
Yellow spot and Blind spot.
Name the following:
The most sensitive region of the retina.
Name the following:
The focal length of the lens is altered by the contraction of which type of muscles.
Name the following:
Yellow spot and ciliary muscles are found in.
Give Technical Term:
The fluid which conveys the vibrations of sound in the cochlea and semicircular canals.
Complete the following sentence with appropriate Word
The aperture in the eye through which light enters is the:
For the normal human eye, the near point is at ___________ cm.
Why the human eye is compared with camera?
What kind of lens is there in our eyes? Where does it form the image of an object?
What is ‘white of the eye’?
Match the following:
| Column - I | Column - II | ||
| 1 | Retina | a | pathway of light |
| 2 | Pupil | b |
far point comes closer |
| 3 | Ciliary muscles | c |
near point moves away |
| 4 | Myopia | d | screen of the eye |
| 5 | Hypermetropia | e | power of accommodation |
State the functions of the following:
Ciliary muscles
Match the following:
| Column - I | Column - II |
| 1. Retina | a. Path way of light |
| 2. Pupil | b. Far point comes closer |
| 3. Ciliary muscles | c. near point moves away |
| 4. Myopia | d. Screen of the eye |
| 5. Hypermetropia | e. Power of accommodation |
Name the following:
Three layers of the eye ball.
