By sucking through a straw, a student can reduce the pressure in his lungs to 750 ~mm of Hg (density =13.6 ~g / cm ^3 ). Using the straw, he can drink water from a glass upto a maximum depth of

Step-by-step solution

Pressure difference between lungs and atmosphere =760 ~mm -750 ~mm =10 ~mm =1 ~cm of Hg . Pressure difference =1 13.6 g=l 1 g of water i.e., one can draw from a depth of 13.6 ~cm of water.