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UPSC Physics Atomic Physics Question Bank Modern physics and Sources of energy

  • question_answer
          The neutron, proton, electron and alpha particle are moving with equal kinetic energies. How can the particles be arranged in the increasing order of their velocities?                        [NDA]

    A) alpha particle-neutron-proton- electron

    B) proton-electron-neutron-alpha particle

    C) electron-proton-neutron-alpha particle

    D) neutron-proton-electron-alpha particle

    Correct Answer: A

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