Question

The height of a barometer filled with a liquid of density $3.4g/cc$ under normal condition is approximately -

• A. $8m$
• B. $5m$
• C. $3m$
• D. $1m$

Answer 1

The correct option is C $3m$

Given,

$\rho =3.4g/cc=3.4\times {10}^{3}kg/m^3$

$g=9.8m/s^2$

$P=1.01\times {10}^{5}Pa$

Pressure, $P=\rho gh$

$h=\frac{P}{\rho g}=\frac{1.01\times {10}^5}{3.4\times {10}^3\times 9.8}$

$h=3.03m$

The correct option is C.