Advertisements
Advertisements
प्रश्न
What is meant by power of accommodation of the eye?
उत्तर १
The ability of the eye to focus sharply on things which are near to the eye as well as far off is known as the power of accommodation.
उत्तर २
The process of focusing the eye at different distances is called the power of accommodation.
APPEARS IN
संबंधित प्रश्न
Write the function of the following part of the human eye: ciliary muscles
Myopia is an example of ______.
Draw a neat and labelled diagram of the structure of the human eye.
What do the ciliary muscles do when you are focusing on a nearby object?
Draw a simple diagram of the human eye and label clearly the cornea, iris, pupil, ciliary muscles, eye-lens, retina, optic nerve and blind spot.
Explain why, when it is getting dark at night, it is impossible to make out the colour of cars on the road.
A man driving a car can read a distant road sign clearly but finds difficulty in reading the odometer on the dashboard of the car. Which of the following statement is correct about this man?
(a) The near point of his eyes has receded away.
(b) The near point of his eyes has come closer to him.
(c) The far point of his eyes has receded away.
(d) The far point of his eyes has come closer to him.
Out of animals of prey and predators, which have their eyes:
on the opposite sides of their head?
Fill in the following blank with suitable word:
Having two eyes enables us to judge.................more accurately.
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?
Select the odd one in the following series:
Retina, Sclera, Ciliary body, Nephron.
Sketch and label V.S. of a human eye.
Give Technical Term:
Name the part of the retina on which an object is focused for the clearest vision.
State the Function:
Cornea
Draw a scientifically correct labelled diagram of a human eye and answer the questions based on it:
- Name the type of lens in the human eye.
- Name the screen at which the maximum amount of incident light is refracted?
- State the nature of the image formed of the object on the screen inside the eye.
The black opening between the aqueous humour and the lens is called ____________.
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 | Hypermetropoia | e | Power of accomodation |
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 size of pupil.
