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प्रश्न
Name the following:
The type of lens used for correcting myopia.
उत्तर
Biconcave
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संबंधित प्रश्न
Name that part of the eye which is equivalent to the photographic film in a camera.
Fill in the following blank with suitable word:
To bring light from a distant object to a focus on the retina of the eye, the convex eye-lens needs to be made..........
How does the convex eye-lens differ from the ordinary convex lens made of glass?
What happens to the size of pupil of our eye (i) in dim light (ii) in bright light?
Name the cells on the retina of an eye which are sensitive to (i) bright light (ii) dim light (iii) sensation of colour.
When is a person said to have developed cataract in his eye? How is the vision of a person having cataract restored?
The animal which does not have eyes that look sideways is:
(a) Horse
(b) Chicken
(c) Lion
(d) Fish
Differentiate between:
Retina and Choroid.
Name the following:
The focal length of the lens is altered by the contraction of which type of muscles.
Name the following:
The area where the image is formed but not seen by our eye is termed as.
Name the following:
The part of the eye responsible for change in the size of the pupil.
Give Technical Term:
The fluid which conveys the vibrations of sound in the cochlea and semicircular canals.
Complete the following sentence with appropriate Word
The aperture in the eye through which light enters is the:
Write the name.
The screen with light sensitive cells in human eye.
The image of an object at an infinite distance is obtained in a real and erect form through a convex magnifying glass.
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.
______ is the structural and functional unit of living organisms.
______ of the eye is comparable to the film of a camera.
Assertion (A): Rods and Cones are photoreceptors in the sclera of eyeball.
Reason (R): Rods are sensitive to dim light.
