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प्रश्न
Mention if the following statement is true (T) or false (F) Give reason.
Sometimes medicines dropped into the eyes come into the nose and even throat
पर्याय
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Write the function of the following part of the human eye: crystalline lens
The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to ______.
Night birds have ______ cones than rods in their eyes.
Explain, why a normal eye is not able to see distinctly the objects placed closer than 25 cm, without putting any strain on the eye.
Name the part of the eye:
which changes the focal length of eye-lens.
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....................
A person walking in a dark corridor enters into a brightly lit room:
State the effect on the pupil of the 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?
Differentiate between members of the following pair with reference to what is asked in bracket.
Rod and cone cells (pigment contained)
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.
Name the muscles of the eye responsible for the power of accommodation.
Answer the following question.
Trace the sequence of events Whichoccur when a bright light is focused on your eyes.
What is a stereoscopic vision?
Mention, if the following statement is True or False
Cones are the receptor cells in the retina of the eye sensitive to dim light.
Choose the Odd One Out:
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.
Why the human eye is compared with camera?
At noon the sun appears white as
Match the following
| 1. | Conjunctiva | a. | Coloured part of eye |
| 2. | Cornea | b. | Photosensitive layer |
| 3. | Iris | c. | Refraction |
| 4. | Retina | d. | Protection |
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.
