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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 `750 mm` of `Hg ("density")= 13.6 g//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 langs of student and atmosphere `= (760 - 750)mm` of `Hg`
i.e. `hdg = 10 m` of `Hg = 1 cm` of `Hg`
or `h xx 1 = 1 xx 13.6`
`:. H = 13.6 cm`
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