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BCECE Engineering BCECE Engineering Solved Paper-2013

  • question_answer
    Graph between \[\log \left( \frac{x}{m} \right)\]and log p is a straight line at angle \[{{45}^{o}}\] with intercept OA as shown. Hence, \[\left( \frac{x}{m} \right)\]at a pressure of 0.2 atm is

    A) 0.4                    

    B)        0.6                         

    C) 0.8                 

    D) 0.2

    Correct Answer: A

    Solution :

    \[\log \left( \frac{x}{m} \right)=\log \,k+\frac{1}{n}\log \rho \] Given, \[log\text{ }k=0.3010=\]intercept on y-axis and       \[\frac{1}{n}=\tan {{45}^{o}}=1=slope\] \[\therefore \]  \[\log \left( \frac{x}{m} \right)=0.3010+1x\,\log \,0.2\]                 \[=\log 2+\log \,0.2\] \[=\log \,0.4\]                 \[\therefore \]  \[\frac{x}{m}=0.4\]


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