A barometer is constructed using a liquid (density $\left.=760 \;kg / m ^{3}\right) .$ What would be the height (In $m$) of the liquid column, when a mercury barometer reads $76 \;cm ?$ (density of mercury $\left.=13600 \;kg / m ^{3}\right)$
NEET 2020, Easy
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Pressure, $P=h d g$
Reading of mercury barometer, $h=76 cm$
Reading of liquid barometer $= h ^{\prime}$
$h ^{\prime} d _{i} g = h d _{ hg } g$
$h ^{\prime}=\frac{76 \times 13600}{760}=1360 cm$
$=13.6 m$
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