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प्रश्न
Write an Explanation.
Farthest distance of distinct vision
उत्तर
The farthest distance of an object from a normal human eye, at which it is clearly visible without stress on the eye is called as farthest distance of distinct vision.
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संबंधित प्रश्न
Answer briefly:
How do you perceive the colour of an object?
Myopia is an example of ______.
Draw a labelled sketch of the human eye.
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.
Describe the anatomy of the human eye.
Out of rods and cones m the retina of your eye:
which work in dim light?
Define the term "power of accommodation" of human eye.
Fill in the following blank with suitable word:
Most of the refraction of light rays entering the eye occurs at the outer surface of the.............
The term " accommodation" as applied to the eye, refers to its ability to:
(a) control the light intensity falling on the retina
(b) erect the inverted image formed on the retina
(c) vary the focal length of the lens
(d) vary the distance between the lens and retina
Which part brings the image into sharp focus on the retina? How does it do this?
The animals called predators have:
(a) both the eyes on the sides
(b) one eye on the side and one at the front
(c) one eye on the front and one at the back
(d) both the eyes at the front
Mention if the following statement is true (T) or false (F) Give reason.
yellow spot of the retina is the region of colour vision
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.
Given below is certain structure. Write against them its functional acivity.
retina and ……………………….
Correct and rewrite the statements by changing the biological term that is underlined for the statement:
The part of the eye which can be donated from a clinically dead person is the Retina.
Select the odd one in the following series:
Retina, Sclera, Ciliary body, Nephron.
Name the following:
The opening through which light enters the eyes.
Choose the correct answer.
Colour is detected by ____________
What happens to the image distance in the normal human eye when we decrease the distance of an object, say 10 m to 1 m? Justify your answer.
What is a Lachrymal gland?
Draw a labeled diagram of the front view of human eye.
Name the following:
The part of the eye responsible for change in the size of the pupil.
Mention, if the following statement is True or False
The least distance of distinct vision for the human eye is 25 cm
State the Function:
Conjunctiva
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.
Write the name.
The part of human eye that transmits electrical signals to the brain.
Write the name.
The fleshy screen behind cornea.
Complete the paragraph by choosing the right options given below.
(minimum, near point, 25 cm, farthest, farthest distance, far point)
The _______ distance of an object from a normal eye, at which it is clearly visible without stress on the eye, is called the minimum distance of distinct vision. The position of the object at this distance is called the _______ of the eye, for a normal human eye, the near point is at _______. The _______ distance of an object from a human eye, at which it is clearly visible without stress on the eye is called _______ of distinct vision. The position of the object at this distance is called the _______ of the eye.
______ is tough and thick white sheath that protects the inner parts of the eye.
Draw the struture of human eye and label its parts.
The muscular diaphragm that controls the size of the pupil is ____________.
Which of the following statements is correct regarding rods and cones in the human eye?
The transparent membrane that keeps the eye moist is ______.
What is ‘white of the eye’?
Which cells of the retina enable us to see coloured objects around us?
With reference to human eye, answer the following question.
What is blind spot?
Explain the role of the part of human eye responsible for power of accommodation of human eye.
Name the following:
The fibres which collectively hold the lens in position.
The layer in the eye where sensory cells (rods and cones) are located ______.
Differentiate between members of the following pair with reference to what is asked in the bracket.
Aqueous humour and vitreous humour (location).
