JEE Main & Advanced Sample Paper JEE Main Sample Paper-26

  • question_answer
    Energy of characteristic X-ray is a consequence of:

    A)  Energy of projectile electron

    B)  thermal energy of target

    C)  transition in target atoms

    D)  none of the above

    Correct Answer: C

    Solution :

    It was found that when voltage applied to X-ray tube is changed, positions of spectral lines remain unchanged. However, when a different material is used as a target in X-ray tube, an entirely different set of spectral lines is obtained. Thus, the energy of characteristic X-ray is a consequence of transition in target atoms.

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