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प्रश्न
Where is the image formed in a human eye?
उत्तर
The image is formed on the retina in a human eye.
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संबंधित प्रश्न
A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads :
Left eye : +2.50 D
Right eye : +2.00 D
State whether these spectacle lenses will converge light rays or diverge light rays.
What is presbyopia? Write two causes of this defect. Name the type of lens which can be used to correct presbyopia.
fill in the following blank with suitable word:
A person is short-sighted if his eyeball is too............Spectacles with a .............lens are needed. A person is long-sighted if his eyeball is too............Spectacles with a ................lens are needed. These focus light rays exactly on to the..........
Name the following:
The part of the eye responsible for its shape.
Give the main function of the following:
Fovea centralis
The following figure show the change in the shape of the lens while seeing distant and nearby objects. Complete the figures by correctly labelling the diagram.
The muscular diaphragm that controls the size of the pupil is ____________.
Select the option with incorrect identification:
Explain the role of the part of human eye responsible for power of accommodation of human eye.
Assertion (A): Rods and Cones are photoreceptors in the sclera of eyeball.
Reason (R): Rods are sensitive to dim light.
