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प्रश्न
Explain the Term: Accommodation in the eye
उत्तर
Accomodation in the eye is the process of adjusting the eyes so that the image can be focused on the retina and seen clearly. This is done by altering the curvature of the lens by the contraction or relaxation of the ciliary muscles.
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संबंधित प्रश्न
The size of the pupil becomes ______ when you see in dim light.
Where is the image formed in a human eye?
Give the scientific names of the following parts of the eye:
carries signals from an eye to the brain.
Give the scientific names of the following parts of the eye:
muscles which change the shape of the eye-lens.
There are two types of light-sensitive cells in the human eye:
To what is each type of cell sensitive?
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?
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?
Mention the characteristics of the image that falls on the retina of the eye.
What is the function of iris and the muscles connected to the lens in human eye?
Name the following:
Fluid present in the posterior chamber of the eye.
State the Function:
Choroid coat in the eye
Write scientific reason.
The movie cannot be enjoyed if seat of a viewer is too close to the screen in the cinema.
The muscular diaphragm that controls the size of the pupil is ____________.
Eyes of the nocturnal birds have large cornea and a large pupil. How does this structure help them?
The transparent membrane that keeps the eye moist is ______.
Select the option with incorrect identification:
In human eye the part which allows light to enter into the eye is ______.
Name the following:
Capacity of the eye to focus at different distances.
