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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2010

  • question_answer
    The increase in length on stretching a wire is 0.05%. If its Poissons ratio is 0.4, then its diameter will be  

    A)  reduced by 0.02%          

    B)  reduced by 0.1%

    C)  increased by 0.02%       

    D)  decreased by 0.4%

    Correct Answer: A

    Solution :

    Poissons ratio\[=\frac{Lateral\,\,strain}{Longitudinal\,\,strain}\] \[\therefore \]Lateral strain\[=0.4\times \frac{0.5}{100}\] So reduced by\[~0.02%\].


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