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JEE Main & Advanced Sample Paper JEE Main Sample Paper-7

  • question_answer
    Statement-1: The shortest wavelength of X-rays emitted from an X-ray tube is independent of voltage applied to the tube. Statement-2: Wavelength of characteristic X-ray spectrum depends on atomic number of the target material.

    A)  Both statements are True and Statement-2 explains Statement-1.

    B)  Both statements are True but Statement-2 does not explain Statement-1.

    C)  Statement-1 is True, Statement-2 is False.

    D)  Statement-1 is False, Statement-2 is True.

    Correct Answer: D

    Solution :

    Statement-1 is false as \[{{\lambda }_{\min }}=\frac{hc}{eV}\] Statement-2 is true as per Moseley's law.


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