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प्रश्न
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 |
उत्तर
| Column I | Column II |
| (i) Myopia | (c) Converging power of the eye lens becomes high |
| (ii) Hypermetropia | (a) Converging power of the eye lens becomes low |
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संबंधित प्रश्न
The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Which lens has a greater focal length?
Name the part of the eye:
on which the image is formed.
What is the function of the lens in the human eye?
State whether the following statement is true or false:
The image formed on our retina is upside-down
What is the range of vision of a normal human eye?
Fill in the following blank with suitable word:
To bring light from a near object to a focus on the retina of the eye, the convex eye-lens need to be made....................
Why does it take some time to see objects in a dim room when you enter the room from bright sunshine outside?
There are two types of light-sensitive cells in the human eye:
Where are they found?
What happens to the size of pupil of our eye (i) in dim light (ii) in bright light?
The human eye forms the image of an object at its ______.
Which of the following controls the amount of light entering the eye?
(a) ciliary muscles
(b) lens
(c) iris
(d) cornea
Which of the following changes occur when you walk out of bright sunshine into a poorly lit room?
(a) the pupil becomes larger
(b) the lens becomes thicker
(c) the ciliary muscle relaxes
(d) the pupil becomes smaller
Why does the eye-lens not have to do all the work of converging incoming light rays?
State whether the following statement is true or false:
Rabbit has eyes which look sideways.
What are the advantages of having two eyes instead of just one?
Five persons A, B, C, D and E have diabetes, leukaemia, asthma, meningitis and hepatitis, respectively.
Which of these persons cannot donate eyes?
Differentiate between members of the following pair with reference to what is asked in bracket.
Rod and cone cells (pigment contained)
Given below is a set of five parts. Rewrite them in correct sequence.
Conjunctiva, retina, cornea, optic nerve, lens.
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.
Give scientific reason:
We cannot clearly see an object kept at a distance less than 25 cm from the eye.
What is the function of iris and the muscles connected to the lens in human eye?
Name the following:
Short sightedness.
Sketch and label V.S. of a human eye.
What is the nature of the image that forms on the retina?
State the Function:
Conjunctiva
Long answer question
Draw the neat labelled diagram of the Sectional view of the human eye.
Name the capacity of the eye lens to change its focal length as per need.
Write the name.
The screen with light sensitive cells in human eye.
Vision defect that increases distance between the lens of the eye and retina of the eye is termed as myopia.
The muscular diaphragm that controls the size of the pupil is ____________.
At noon the sun appears white as
What kind of lens is there in our eyes? Where does it form the image of an object?
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 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:
Place of best vision in the retina of the eye.
Name the following:
Capacity of the eye to focus at different distances.
Name the following:
The layer of the wall of the eye-ball that corresponds to the black lining of the box of a camera
The thin, transparent extension of sclerotic layer found in front of the lens is ______.
