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NEET Sample Paper NEET Sample Test Paper-71

  • question_answer
    By sucking through a straw, a student can reduce the pressure in his lungs to 750 mm of Hg (\[\operatorname{density} = 13.6 g/c{{m}^{3}}\]). Using the straw, he can drink water from a glass up to 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 and \[\operatorname{atmosphere} = \left( 760 - 750 \right) mm of Hg\] That is, \[\operatorname{hdg} =10 mm of Hg = 1 cm of Hg\] or \[\operatorname{h}\,\times \,\,1 = 1 \times  13.6\] \[\therefore ~\,\,\,\,\,\,h=13.6 cm\]


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