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प्रश्न
Mention, if the following statement is True or False
The least distance of distinct vision for the human eye is 25 cm
विकल्प
True
False
उत्तर
True
APPEARS IN
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?
Where does the greatest degree of refraction of light occur in the eye?
What is the least distance of distinct vision for a normal human eye?
The descriptions of five kinds of images are given below:
(a) diminished and virtual
(b) enlarged and real
(c) enlarged and erect
(d) real and inverted
(e) virtual and the same size
Which one of these describes the image formed:
(i) on the retina of the eye?
(ii) by a magnifying glass?
(iii) by a convex driving mirror on a car?
(iv) by a plane mirror?
(v) on the screen of a slide projector?
How much is our field of view:
with one eye open?
Fill in the following blank with suitable word:
Having two eyes gives a ................field of view.
What are the advantages of having two eyes instead of just one?
With reference to the functioning of the eye, answer the question that follow:
Name the two structure in the eye responsible for bringing about the change in the shape of the lens.
Name the following:
White part of the eye.
Define the following:
Blind spot
Write whether the following is true or false:
Rods are the receptor cells in the retina of the eye sensitive to dimlight.
What is a Lachrymal gland?
State the Location of:
Lacrimal gland
In a relaxed state, the focal length of healthy eyes is _______.
Write scientific reason.
The movie cannot be enjoyed if seat of a viewer is too close to the screen in the cinema.
Explain the structure and functioning of Human eye. How are we able to see nearby as well as distant objects?
In the figure of the human eye, the cornea is represented by the letter
Boojho while waving his hand very fast in front of his eyes, observes that his fingers appear blurred. What could be the reason for it?
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 |
Where is the following located?
Yellow spot
