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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 cm

B

75 cm

C

`13.6 cm`

D

`1.36 cm`

Text Solution

Verified by Experts

The correct Answer is:
C
Pressure difference between lungs and atmosphere
=`760 - 750 = 10 "mm of Hg"`
`rho omega gh_omega = rho_omega g h_m`
`rho_omega h_omega = rho_m h_m`
`1 xx h_omega = 13.6 xx 1`
`h_omega = 13.6 cm`.
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