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Light Test - 5

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Light Test - 5
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Weekly Quiz Competition
  • Question 1
    1 / -0

     X is a surface that cannot produce clear images. What is X?

    Solution

    When light is incident on a rough surface, irregular reflection takes place, hence the image formed is not clear.

  • Question 2
    1 / -0

    With what is glass coated in order to convert it into a mirror?

    Solution

    Glass is coated with silver.

  • Question 3
    1 / -0

    What makes objects visible?

    Solution

    An object is visible only when reflected light from the object reaches the retina of our eyes.

  • Question 4
    1 / -0

     What is the phenomenon of light bouncing back into the same medium called?

    Solution

    The phenomenon of light in which, light is reflected or bounced back into the same medium is called reflection.

  • Question 5
    1 / -0

    What is the perpendicular drawn at any point on a mirror called?

    Solution

     The perpendicular drawn to the reflecting surface of a mirror at the point of incidence is called 'normal'. The point on the reflecting surface where the light ray is incident is called the point of incidence.

  • Question 6
    1 / -0

     How many images are obtained when plane mirrors are arranged parallel to each other?

    Solution

    When two mirrors are kept parallel to each other, an infinite number of images can be seen.

  • Question 7
    1 / -0

     If the angle of incidence is 80o, what will be the angle of reflection?

    Solution

    The angle of incidence = the angle of reflection. So, the angle of reflection is 80o.

  • Question 8
    1 / -0

    Which of the following is used by E.N.T. doctors?

    Solution

    A concave mirror is used by E.N.T. doctors to get a magnified image of internal organs like ear, nose and throat.

  • Question 9
    1 / -0

      If the angle of incidence is 50o, then calculate the angle between the incident ray and the reflected ray.

    Solution

     In reflection of light, ∠i = 50and ∠i = ∠r = the angle between incident ray and reflected ray = 50° + 50° = 100°

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