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JEE Main & Advanced Sample Paper JEE Main Sample Paper-22

  • question_answer
    The intensity of x-ray beam becomes half when it cross through a led sheet of thickness t. The intensity becomes \[1/x\] when it cross through a led sheet of thickness 3t.Then the value of \[x\] will be :

    A)  \[2\times 3\]                             

    B)  \[{{2}^{3}}\]

    C)  3                                

    D)  \[3\times {{2}^{2}}\]

    Correct Answer: B

    Solution :

    For x ray absorption \[I={{I}_{0}}{{e}^{-\mu t}}\,\] where t is thickness.


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