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प्रश्न
Define the following:
Yellow spot
उत्तर
Yellow spot - It is the region of best vision where more cone cells are present.
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संबंधित प्रश्न
Distinguish between: blind spot and yellow spot
What kind of lens is present in the human eye?
Name two parts of the eye which refract light rays (or bend light rays).
What are rods and cones in the retina of an eye? Why is our night vision relatively poor compared to the night vision of an owl?
Describe the working of the human eye with the help of the above diagram.
A student sitting on the last bench in the class cannot read the writing on the blackboard clearly but he can read the book lying on his desk clearly. Which of the following statement is correct about the student?
(a) The near point of his eyes has receded away.
(b) The near point of his eyes has come close 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:
at the front of their head?
Out of animals of prey and predators, which have their eyes:
on the opposite sides of their head?
State whether the following statement is true or false:
Rabbit has eyes which look sideways.
Explain clearly why, a person who has lost the sight of one eye is at a disadvantage compared with the normal person who has two good eyes.
Differentiate between members of the following pair with reference to what is asked in bracket.
Rod and cone cells (pigment contained)
Give scientific reason:
We cannot clearly see an object kept at a distance less than 25 cm from the eye.
Label the following diagram :
Answer the following question.
Write the structure of eye lens and state the role of ciliary muscles in the human eye.
For the normal human eye, the near point is at ___________ cm.
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.
Vision defect that increases distance between the lens of the eye and retina of the eye is termed as myopia.
Name the following:
Kind of retinal cells sensitive to dim light.
Name the following:
The layer of the wall of the eye-ball that corresponds to the black lining of the box of a camera
With reference to human eye answer the question that follow:
Name the part of the eye associated with the layer providing nourishment to the eye.
