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By sucking a straw a student can reduce ...

By sucking a straw a student can reduce the pressure in his lungs to `750 mm` of `Hg ("density")= 13.6 kg//cm^(3))` Using the straw, he can drink water from a glass up to a maximum depth of :

A

10.2 cm

B

75.3 cm

C

13.6 cm

D

1.96 cm

Text Solution

Verified by Experts

The correct Answer is:
C
Pressure difference between atmosphere and lungs = pressure difference at a depth h of fluid.
`rArr 10 mm xx rho_(Hg) xx g = hrho_(w)g`
`h=10mm xx (rhoH_(g))/(rho_(w))=13.6` cm
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