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J & K CET Medical J & K - CET Medical Solved Paper-2005

  • question_answer
    A proton, a deuteron and an alpha particle are accelerated through same potential difference and then they enter a normal uniform magnetic field. The ratio of their kinetic energies will be :

    A)  2 : 1 : 3                

    B)  1 : 1 : 2

    C)  1 : 1 : 1                

    D)  1 : 2 : 4

    Correct Answer: B

    Solution :

                     When a particle with charge q passes through a potential difference V, then kinetic energy acquired by particle is \[K=qV\] Given,    \[{{q}_{1}}:{{q}_{2}}:{{q}_{3}}=1\,:1:2\] and      \[{{V}_{1}}:{{V}_{2}}:{{V}_{3}}=1\,:1:1\]                 \[{{K}_{1}}:{{K}_{2}}:{{K}_{3}}=1\,:1:2\]


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