JEE Main & Advanced Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Assertion and Reason

  • question_answer
    Assertion          :           An object can have constant speed but variable velocity. Reason            :           Speed is a scalar but velocity is a vector quantity.

    A)             If both assertion and reason are true and the reason is the correct explanation of the assertion.            

    B)             If both assertion and reason are true but reason is not the correct explanation of the assertion.          

    C)             If assertion is true but reason is false.          

    D)             If the assertion and reason both are false.          

    E)             If assertion is false but reason is true.

    Correct Answer: A

    Solution :

                    Since velocity is a vector quantity, hence as its direction changes keeping magnitude constant, velocity is said to be changed. But for constant speed in equal time interval distance travelled should be equal.          


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