First slide

Fluid statics

Question

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

Easy

A

0.76 m
B

1.36 m
C

13.6 m
D

136 m

Solution

Pressure, P = hdg
Reading of mercury barometer, h = 76 cm
Reading of liquid barometer = h'
$h^{'} d_{ℓ} g = {hd}_{hg} g$
$\begin{aligned} h^{'} = \frac{76 \times 13600}{760} = 1360 cm \\ = 13 .6 m \end{aligned}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App