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JEE Main & Advanced Sample Paper JEE Main Sample Paper-23

  • question_answer
    By sucking through a straw, a student can reduce the pressure in his lungs to 750 mm of Hg (density \[=13.6\,\,gc{{m}^{-3}}\]) Using the straw, he can drink water from a glass upto a maximum depth of

    A)  10 cm                         

    B)  75 cm

    C)  \[13.6\] cm                   

    D)  \[1.36\] cm

    Correct Answer: C

    Solution :

    Pressure difference between lungs of student anu atmosphere =(760 - 750) mm of Hgi.e. \[h\rho g=10\,\,mm\] of Hg = 1 cm of Hgor \[h\times 1=1\times 13..6=13.6\,cm\]


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