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प्रश्न
The pigmented circular area seen in front of the eye:
विकल्प
Cornea
Lens
Iris
Ciliary muscles
उत्तर
Iris
APPEARS IN
संबंधित प्रश्न
Write the function of the following part of the human eye: ciliary muscles
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 |
What is the name of:
the curved, transparent front surface of the eye?
Give the scientific names of the following parts of the eye:
carries signals from an eye to the brain.
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.............
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....................
List, in order, the parts of the eye through which light passes to reach the retina.
Describe the working of the human eye with the help of the above diagram.
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
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Cones : Iodopsim :: Rods : ______.
What is a lacrimal gland?
Give scientific reason:
One can sense colours only in bright light.
Define the following:
Power of accommodation
Choose the correct answer.
Rods are receptor of ______________
Sketch and label V.S. of a human eye.
Write an Explanation.
Minimum distance of distinct vision
The following figure show the change in the shape of the lens while seeing distant and nearby objects. Complete the figures by correctly labelling the diagram.
In the figure of the human eye, the cornea is represented by the letter
Assertion (A): Rods and Cones are photoreceptors in the sclera of eyeball.
Reason (R): Rods are sensitive to dim light.
State the functions of the following:
Iris
