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प्रश्न
With reference to the functioning of the eye, answer the question that follow:
Name the two structure in the eye responsible for bringing about the change in the shape of the lens.
उत्तर
Ciliary muscles and suspensory ligament
संबंधित प्रश्न
Compare the following: Choroid and retina
Differentiate between: Rods and cones
What changes take place in the shape of eye-lens:
when the eye is focused on a near object?
A person walking in a dark corridor enters into a brightly lit room:
State the effect on the pupil of the eye.
How does this affect the amount of light entering the eye?
Draw a simple diagram of the human eye and label clearly the cornea, iris, pupil, ciliary muscles, eye-lens, retina, optic nerve and blind spot.
The human eye possesses the power of accommodation. This is the power to:
(a) alter the diameter of the pupil as the intensity of light changes
(b) distinguish between lights of different colours
(c) focus on objects at different distances
(d) decide which of the two objects is closer.
Explain why, when it is getting dark at night, it is impossible to make out the colour of cars on the road.
With reference to the functioning of the eye, answer the question that follow:
What is the shape of the lens during distant vision?
Define the following:
Yellow spot
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.
Name the following:
The area where the image is formed but not seen by our eye is termed as.
Give Technical Term:
Name the part of the retina on which an object is focused for the clearest vision.
Give Technical Term:
The adjustment of the eye in order to obtain a clear vision of objects at different distances
Mention, if the following statement is True or False
Cones are the receptor cells in the retina of the eye sensitive to dim light.
For the normal human eye, the near point is at ___________ cm.
Assertion (A): Rods and Cones are photoreceptors in the sclera of eyeball.
Reason (R): Rods are 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
The layer in the eye where sensory cells (rods and cones) are located ______.
With reference to human eye answer the question that follow:
Name the part of the eye associated with keeping the lens moist and protecting it from physical shock.
