JEE Main & Advanced Physics Elasticity Question Bank Graphical Questions

  • question_answer
    The graph shows the behaviour of a length of wire in the region for which the substance obeys Hook?s law. P and Q represent      [AMU 2001]                         

    A) P = applied force, Q = extension

    B)             P = extension, Q = applied force

    C)             P = extension, Q = stored elastic energy       

    D)             P = stored elastic energy, Q = extension 

    Correct Answer: C

    Solution :

                    Graph between applied force and extension will be straight line because in elastic range, Applied force µ extension but the graph between extension and stored elastic energy will be parabolic in nature As \[U=1/2\,\,k{{x}^{2}}\]or \[U\propto {{x}^{2}}\].


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