Self Studies

Human Eye and C...

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  • Question 1
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    Statement A : Improper functioning of rod shaped cells causes colour blindness , Statement B : The focal length of the human eye can be increased or decreased

  • Question 2
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    A boy uses spectacles of focal length – 50cm. Hence the defect of vision, he is suffering from-

  • Question 3
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    What happens to the image distance in the eye when we increase the distance of an object from the eye?

  • Question 4
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    Match the following with correct response.
    (1) Sclerotic
    (2) Cornea
    (3) Iris
    (4) Crystalline lens

    (A) Outer bulging part of eye from the front
    (B) A natural double convex lens
    (C) A dark muscular diaphragm that controls the size of the pupil
    (D) Outermost covering containing internal parts

  • Question 5
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    Match the following with correct response.
    (1) Power of accommodation
    (2) Near point
    (3) Far point
    (4) Least distance of distinct vision

    (A) Farthest point to which the eye see clearly
    (B) The ability of eye lens to focus near and far objects
    (C) Generally increases with age
    (D) Nearest point which the eye can see clearly

  • Question 6
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    Match the following with correct response.
    (1) Cataract
    (2) Myopia
    (3) Hyper metropia
    (4) Presbyopia

    (A) Old age person unable to see near objects clearly due to weakening of ciliary muscles
    (B) A person can see near objects but not able to see for objects clearly
    (C) Opacity of the lens
    (D) A person can see far objects but not able to see near objects clearly

  • Question 7
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    Match the following with correct response.
    (1) Prism
    (2) Spectrum
    (3) Tyndall effect
    (4) Rainbow

    (A) A medium bounded by two plane refracting surfaces at an angle
    (B) Scattering of beam of light, when it passes through colloidal solution
    (C) Splitting up of white light into its components
    (D) It is a spectrum of white light when it passes through small rain drops

  • Question 8
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    Match the following with correct response.
    (1) Retina
    (2) Blind spot
    (3) Iris
    (4) Ciliary muscles

    (A) Region without any sensory cells
    (B) Change the focal length of eye lens
    (C) Give colours to the eye
    (D) Light sensitive layer

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