JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Self Evaluation Test - Dual Nature of Radiation and Matter

  • question_answer
    An x-ray tube is operating at 30 KV then the minimum wavelength of the x-rays coming out of the tube is -

    A) \[1.24\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[0.413\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[124\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[0.13\overset{\text{o}}{\mathop{\text{A}}}\,\]

    Correct Answer: B

    Solution :

    [b] \[{{\lambda }_{\min }}=\frac{12400}{V}\overset{\text{o}}{\mathop{\text{A}}}\,=\frac{12400}{30000}=0.413\overset{\text{o}}{\mathop{\text{A}}}\,\]


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