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प्रश्न
Name the following:
Place of no vision in the retina of the eye.
उत्तर
Blind spot
संबंधित प्रश्न
How does the eye adjust to take account of an increase in brightness?
What is the:
near point of a normal human eye?
Give the scientific names of the following parts of the eye:
a hole in the middle of the iris.
The eyes of a person are focused (i) on a nearby object, and (ii) on a distant object, turn by turn. In which case:
the converging power of eye-lens will be the maximum?
What happens to the eye when you enter a darkened cinema hall from bright sunshine? Give reason for your answer.
What happens to the size of pupil of our eye (i) in dim light (ii) in bright light?
The term " accommodation" as applied to the eye, refers to its ability to:
(a) control the light intensity falling on the retina
(b) erect the inverted image formed on the retina
(c) vary the focal length of the lens
(d) vary the distance between the lens and retina
What is presbyopia? Write two causes of this defect. Name the type of lens which can be used to correct presbyopia.
A student sitting on the last bench in the class cannot read the writing on the blackboard clearly but he can read the book lying on his desk clearly. Which of the following statement is correct about the student?
(a) The near point of his eyes has receded away.
(b) The near point of his eyes has come close to him.
(c) The far point of his eyes has receded away.
(d) The far point of his eyes has come closer to him.
How much is our field of view:
with one eye open?
Name two animals having eyes:
one the sides of the head.
Name the following:
The opening through which light enters the eyes.
Explain the Term: Accommodation in the eye
Mention, if the following statement is True or False
Cones are the receptor cells in the retina of the eye sensitive to dim light.
State the Function:
Choroid coat in the eye
Write an Explanation.
Power of accommodation
Name the part of the eye which gives colour to the eyes.
Match the following
| 1. | Conjunctiva | a. | Coloured part of eye |
| 2. | Cornea | b. | Photosensitive layer |
| 3. | Iris | c. | Refraction |
| 4. | Retina | d. | Protection |
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 |
The figure given below refers to the vertical section of the eye of a mammal. Study the figure carefully and answer the following questions.
 |
- Label the guidelines shown as 1 to 10.
- Write one important role of parts shown as 3 and 7.
- Write one structural difference between the parts shown as 9 and 10.
- Mention one functional difference between the parts shown as 6 and 8.
