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प्रश्न
Choose the Odd One Out:
पर्याय
Coughing
Sneezing
Eating
Eating
उत्तर
Eating
APPEARS IN
संबंधित प्रश्न
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.
Name two parts of the eye which refract light rays (or bend light rays).
Give the scientific names of the following parts of the eye:
changes shape to focus a picture on the retina.
What change is made in the eye to enable it to focus on objects situated at different distances? Illustrate your answer with the help of diagrams.
The human eye forms the image of an object at its ______.
Which of the following changes occur when you walk out of bright sunshine into a poorly lit room?
(a) the pupil becomes larger
(b) the lens becomes thicker
(c) the ciliary muscle relaxes
(d) the pupil becomes smaller
An object is moved closer to an eye. What changes must take place in the eye in order to keep the image in sharp focus?
Nocturnal animals (animals which sleep during the day and come out at night) tend to have wide pupils and lot of rods in their retinas. Suggest reasons for this.
What are the advantages of having two eyes instead of just one?
Choose the correct answer.
In the chemistry of vision, the photosensitive substance is _________________
Differentiate between:
Retina and Choroid.
Complete the following sentence with appropriate Word
The aperture in the eye through which light enters is the:
Write the name.
The fleshy screen behind cornea.
A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of power
Vitreous humour is present between ______.
| 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 accomodation |
Name the following:
Place of no vision in the retina of the eye.
Name the following:
Capacity of the eye to focus at different distances.
Write the main functional activity of the following structure.
Ciliary body and suspensory ligament
Give reason:
Blind spot is considered as 'area of no vision'.
