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प्रश्न
Where is the following located?
Yellow spot
उत्तर
The yellow spot lies at the back of the eye, almost at the centre of the horizontal axis of the eyeball.
संबंधित प्रश्न
Which. of the following has normal vision?
(a) Xc Xc
(b) Xc Y
(c) XC Xc
(d) Xc Yc
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?
Describe the working of the human eye with the help of the above diagram.
The human eye forms the image of an object at its ______.
Why does the eye-lens not have to do all the work of converging incoming light rays?
With both eyes open, a person's field of view is about:
(a) 90°
(b) 150°
(c) 180°
(d) 360°
The region in the eyes where the rods and cones are located is the
Name the muscles of the eye responsible for the power of accommodation.
With reference to the functioning of the eye, answer the question that follow:
Name the cells of the retina and its respective pigments which get activated in the light.
The figure below compares a part of our eye with a part of a photographic camera.
Name the corresponding parts of the eye the camera shown here that are comparable in function.
Give scientific reason:
One can sense colours only in bright light.
Define the following:
Blind spot
What is the nature of the image that forms on the retina?
Mention, if the following statement is True or False
Rods are responsible for vision in the dark
Draw the struture of human eye and label its parts.
Write down the names of parts of the eye in the blank spaces shown in the figure.
Given below is a cross section of the human eye. Match the structures marked (a) to (e) with their correct functions:
Example: (f) - 6. Holds the lens in position
| Cross section of Human Eye | Functions | |
 |
1. | Protects retina |
| 2. | Regulates the size of the pupil | |
| 3. | Alters the shape of the lens | |
| 4. | Keeps the lens moist | |
| 5. | Transmits nerve impulses to brain | |
| 6. | Holds the lens in position |
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 |
Match the terms in column I with those in column II and write down the matching pairs.
| Column I | Column II | ||
| (i) | Conjunctiva | (a) | Viral infection |
| (ii) | Cornea | (b) | Ciliary body |
| (iii) | Choroid | (c) | Spiral-shaped |
| (iv) | Cochlea | (d) | Transparent epithelium |
| (v) | Conjunctivitis | (e) | Suspensory ligament |
| (f) | Contains melanin | ||
| (g) | Transparent but appears black |
With reference to human eye answer the question that follow:
Name the part of the eye associated with the regulation of the shape of lens.
