JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Conservation of Energy and Momentum

  • question_answer
    If the K.E. of a particle is doubled, then its momentum will           [EAMCET 1979; CPMT 2003: Kerala PMT 2005]

    A)                 Remain unchanged        

    B)                 Be doubled

    C)                 Be quadrupled

    D)                    Increase \[\sqrt{2}\] times

    Correct Answer: D

    Solution :

                        \[P=\sqrt{2\,mE}\]\\[P\propto \sqrt{E}\] i.e. if kinetic energy of a particle is doubled the its momentum will becomes \[\sqrt{2}\]times.


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