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प्रश्न
Given below is a set of five parts. Rewrite them in correct sequence.
Conjunctiva, retina, cornea, optic nerve, lens.
उत्तर
Conjunctiva → cornea → lens → retina → optic nerve.
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संबंधित प्रश्न
List the parts of the human eye that control the amount of light entering into it. Explain how they perform this function.
Explain, why a normal eye is not able to see distinctly the objects placed closer than 25 cm, without putting any strain on the eye.
Give the scientific names of the following parts of the eye:
muscles which change the shape of the eye-lens.
Fill in the following blank with suitable word:
Most of the refraction of light rays entering the eye occurs at the outer surface of the.............
What happens to the eye when you enter a darkened cinema hall from bright sunshine? Give reason for your answer.
Ciliary muscles of human eye can contract or relax. How does it help in the normal functioning of the eye?
How does the eye change in order to focus on near or distant objects?
(a) The lens moves in or out
(b) The retina moves in or out
(c) The lens becomes thicker or thinner
(d) The pupil gets larger or smaller
Explain why, when it is getting dark at night, it is impossible to make out the colour of cars on the road.
The region in the eyes where the rods and cones are located is the
Name the following:
The photoreceptors found in the retina of the eye.
Select the odd one in the following series:
Retina, Sclera, Ciliary body, Nephron.
State the Function:
Ear drum
The muscular diaphragm that controls the size of the pupil is ____________.
A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in Figure . In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?
 |
 |
 |
 |
| (i) | (ii) | (iii) | (iv) |
With reference to human eye, answer the following question.
What is blind spot?
With neat, labeled diagram describe the structure of retina of 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 | f. Power of accommodation |
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 accomadation |
Name the following:
The circular opening enclosed by iris.
Name the following:
The fibres which collectively hold the lens in position.
