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Light Test - 27

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Light Test - 27
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Weekly Quiz Competition
  • Question 1
    1 / -0
    What do you mean by "Rectilinear Propagation" of Light ?
    Solution
    According to the law of $$ \bf{Rectilinear\ Propagation} $$ of light, light travels in straight lines in homogeneous media. 

    Hence, the correct answer is OPTION A. 
  • Question 2
    1 / -0
    The image of the teeth seen by a dentist while testing teeth is 
    Solution

  • Question 3
    1 / -0
    Image formed by plane mirror is:
    Solution
    Images formed by plane mirror is virtual, upright, left-right reversed, the same distance from the mirror as the object's distance, and the same size as the object.

  • Question 4
    1 / -0
    The number of capital letters such as A, B, C, D which are not laterally inverted by a plane mirror?
    Solution
    The number of capital letters which are not laterally inverted by a plane mirror are A, H, I, M, O, T, U, V, W, X, Y.
    $$\therefore$$Total=11
  • Question 5
    1 / -0
    The observer  ________see the candle because light always takes _______ path.

    Solution
    Light always travels in straight lines. so it cannot travel through a curved pipe as shown in the figure. That is why the light from the candle does not reach the observer and hence he cannot see the candle. 
  • Question 6
    1 / -0
    Three light bulbs are concealed from an observer by an opaque wall as shown. Without shifting the positions of the observer and the bulbs, the images of which of the bulbs can the observer see from the plane mirror? 

    Solution
    In the above diagram images of the bulb are shown and the area of visible is shown. Only $$P$$ and $$Q$$ are visible but $$R$$ is not visible.

  • Question 7
    1 / -0
    Which of the following forms a virtual and erect image for all positions of the object ?
    Solution
    Concave lens and convex mirror are diverging in nature. They form virtual and erect images.
  • Question 8
    1 / -0
    Shadow of an object is produced, when it is placed in the path of light ray, because
    Solution

  • Question 9
    1 / -0
    A small object is 10 cm in front of a plane mirror. A man stands 30 cm from the mirror behind the object and looks at the object's image. He should focus his eyes to see the image at a distance of ___ from himself. (Fill in the blank)
    Solution
    Hence man has to focus at 40 cm distance to focus on the image of the object formed on the plane mirror.

  • Question 10
    1 / -0
    The mirror which is used for side view in vehicles is 

    Solution

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