RAJASTHAN PMT Rajasthan - PMT Solved Paper-1995

  • question_answer
    Minimum wavelength of X-ray? Is \[0.1\,\overset{\text{o}}{\mathop{\text{A}}}\,\], then applied accelerating voltage on the tube is:

    A)  \[1.25\times {{10}^{3}}volt\]     

    B)         \[1.24\times {{10}^{4}}volt\]     

    C)                         \[1.24\times {{10}^{5}}volt\]     

    D)         \[1.24\times {{10}^{6}}volt\]

    Correct Answer: C

    Solution :

    \[\lambda {{=}_{\min }}=\frac{12400}{V}\overset{\text{o}}{\mathop{\text{A}}}\,\] \[0.1=\frac{12400}{V}\] \[\Rightarrow \] \[V=124000volt\]                                 \[1.24\times {{10}^{5}}volt\]


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