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प्रश्न
The image of the object in the human eye is formed on the cross screen.
विकल्प
Right
Wrong
उत्तर
The image of the object in the human eye is formed on the cross screen- Wrong
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संबंधित प्रश्न
Which. of the following has normal vision?
(a) Xc Xc
(b) Xc Y
(c) XC Xc
(d) Xc Yc
Draw a labelled sketch of the human eye.
With the help of ciliary muscles the human eye can change its curvature and thus alter the focal length of its lens. State the changes that occur in the curvature and focal length of the eye lens while viewing (a) a distance object, (b) nearby objects.
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?
Name the part of the eye:
which controls the amount of light entering the eye.
What is the name of:
the curved, transparent front surface of the eye?
Name the part of the retina which is insensitive to light.
Out of rods and cones m the retina of your eye:
which work in dim light?
Fill in the following blank with suitable word:
To bring light from a distant object to a focus on the retina of the eye, the convex eye-lens needs 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?
How does this affect the amount of light entering the eye?
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.
Five persons A, B, C, D and E have diabetes, leukaemia, asthma, meningitis and hepatitis, respectively.
Which of these persons cannot donate eyes?
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Cones : Iodopsim :: Rods : ______.
Mention if the following statement is true (T) or false (F) Give reason.
Blind spot is called so because no image is formed on it.
Give scientific reason:
We cannot clearly see an object kept at a distance less than 25 cm from the eye.
Name the following:
Short sightedness.
Define the following:
Blind spot
Choose the correct answer :
The rods and cones of a vertebrate retina function is to _________
What happens to the image distance in the normal human eye when we decrease the distance of an object, say 10 m to 1 m? Justify your answer.
What is a Lachrymal gland?
What is the nature of the image that forms on the retina?
Give Technical Term:
The nutritive layer of the eye which also presents reflection of light.
Mention, if the following statement is True or False
Rods are responsible for vision in the dark
Choose the Odd One Out:
Choose the Odd One Out:
Write the name.
The fleshy screen behind cornea.
Write the name.
The screen with light sensitive cells in human eye.
At noon the sun appears white as
Explain the structure and functioning of Human eye. How are we able to see nearby as well as distant objects?
What kind of lens is there in our eyes? Where does it form the image of an object?
Assertion (A): Rods and Cones are photoreceptors in the sclera of eyeball.
Reason (R): Rods are sensitive to dim light.
Name the following:
Place of no vision in the retina of the eye.
Name the following:
The circular opening enclosed by iris.
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 |
Differentiate between members of the following pair with reference to what is asked in the bracket.
Aqueous humour and vitreous humour (location).
Give reason:
Blind spot is considered as 'area of no vision'.
