A boy can reduce the pressure in his lungs to 750 mm of mercury. Using – McqOptions

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1.	A boy can reduce the pressure in his lungs to 750 mm of mercury. Using a straw he can drink water from a glass upto the maximum depth of (atmospheric pressure\[=760\text{ }mm\]of mercury; density of mercury\[=13.6gc{{m}^{-3}}\])
A.	13.6 cm
B.	9.8 cm
C.	10cm
D.	76cm
Answer» B. 9.8 cm

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