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7th Class Science Time and Motion Question Bank Motion and Time

  • question_answer
    A body moves along the circumference of a circular track of radius R. What is displacement of the body when it covers \[\frac{3}{4}th\] of its circumference?

    A) 3R                               

    B)  \[\frac{3}{4}\pi R\]

    C)  \[\frac{3}{2}\pi R\]               

    D)  \[\sqrt{2}R\]

    Correct Answer: D

    Solution :

         \[[A{{B}^{2}}=A{{O}^{2}}+O{{B}^{2}}]\]


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