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JEE Main & Advanced Physics Wave Mechanics Question Bank Self Evaluation Test - Oscillations

  • question_answer
    When the displacement of a particle executing simple harmonic motion is half of its amplitude, the ratio of its kinetic energy to potential energy

    A) 1 : 3     

    B) 2 : 1  

    C) 3 : 1  

    D) 1 : 2

    Correct Answer: C

    Solution :

    [c] Given, \[x=\frac{A}{2}\] \[\therefore \,\,from\,x=A\,\sin \,\omega t\Rightarrow \omega t={{30}^{o}}\] And, \[\frac{KE}{PE}={{\cot }^{2}}\omega t={{(\sqrt{3})}^{2}}=3\]


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