A barometer is constructed using a liquid (density = 760 kg/m3) What would be the height of the liquid column, when a mercury barometer reads 76 cm ? (density of mercury = 13600 kg/m3)

Question

A barometer is constructed using a liquid (density = 760 kg/m3) What would be the height of the liquid column, when a mercury barometer reads 76 cm ? (density of mercury = 13600 kg/m3) (A) 1.36 m (B) 13.6 m (C) 136 m (D) 0.76 m

Tardigrade Admin · Accepted Answer

76 cm ×ρHg × g=h×ρL× g h=76 cm×(ρHg/ρL) =76 cm×(13600/760) =13.6 m

Q. A barometer is constructed using a liquid (density $= 760 k g / m^{3})$ What would be the height of the liquid column, when a mercury barometer reads $76 c m$ ?
(density of mercury $= 13600 k g / m^{3})$

$1.36 m$

$13.6 m$

$136 m$

$0.76 m$

$76 c m \times ρ_{H g} \times g = h \times ρ_{L} \times g$
$h = 76 c m \times \frac{ρ _{H g}}{ρ _{L}}$
$= 76 c m \times \frac{13600}{760}$
$= 13.6 m$

Q. A barometer is constructed using a liquid (density =760kg/m3) What would be the height of the liquid column, when a mercury barometer reads 76cm ? (density of mercury =13600kg/m3)

1.36m

13.6m

136m

0.76m