Dispersion of Light and Rainbow Formation
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Questions and Answers

What is the main function of the cornea in the eye?

  • To refract light rays (correct)
  • To give the eye its distinctive color
  • To protect the interior of the eye from injuries
  • To control the amount of light entering the eye

    • Which part of the eye controls the size of the pupil?

  • Sclera
  • Retina
  • Lens
  • Iris (correct)

    • What is the function of the lens in the eye?

  • To provide distinctive color to the iris
  • To focus light on the retina (correct)
  • To control the amount of light entering the eye
  • To protect the retina from injuries

    • How does a rainbow form according to the text?

    <p>Due to the dispersion of white light by tiny drops of water</p> Signup and view all the answers

    What is the function of the optic nerve in the eye?

    <p>Transmit sensations felt by nerve cells to the brain</p> Signup and view all the answers

    Which cells in the retina are sensitive to dim light and sense black and white?

    <p>Rods</p> Signup and view all the answers

    What is the purpose of eyelids and eyelashes in protecting the eyes?

    <p>Trap dust particles</p> Signup and view all the answers

    What is the blind spot in the eye?

    <p>An area where vision is not possible due to lack of sensory cells</p> Signup and view all the answers

    What is persistance of vision as described in the text?

    <p>The eye's ability to maintain visual sensation for a fraction of a second after an object is removed</p> Signup and view all the answers

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