3rd Class Science Lights, Sound and Force Question Bank Light Sound and Force

  • question_answer
    Nidhi was asked to draw the shadow of a tumbler formed on the screen behind it, when it is kept in different manners at the same position and light is shone on it from the same direction. She drew three shadows as shown here.
    Read the following statements regarding it and select the INCORRECT ones.
    (i) Shadow 1 is formed when the tumbler is kept horizontally.
    (ii) Shadow 2 is formed when the tumbler is kept vertically upright.
    (iii) Shadow 3 is incorrect because the given tumbler cannot cast a rectangular shadow.
       

    A) (i) and (ii) only           

    B) (ii) and (iii) only         

    C) (i) and (iii) only      

    D) None of these 

    Correct Answer: D

    Solution :

    A tumbler or any object may cast differently shaped shadows depending upon the angle of light source and the manner in which the object is kept.


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