Question

a liquid of density 1.70g/ml is filled in the barrometer in place of mercury what should be the length of liquid column if another barometer filled with mercury is measuring 75cm pressure​

Answer 1

Height of the liquid column = 600 cm

Explanation:

Given: A liquid of density 1.70g/ml is filled in the barrometer in place of mercury.

Find: What should be the length of liquid column if another barometer filled with mercury is measuring 75cm pressure​?

Solution:  

P = hρg

Where P is the pressure due to the weight of any fluid of average density ρ at any depth h below its surface.

P = 75cm * 13.6 gm/cm3 * 980 cm/s2

  = 999600 * 10 * 10^5 dyne / cm2

10 * 10^5 = h * 1.7 gm/m * 980

h = 10 * 10^5 / 980 * 1.7

h = 600.2 cm

height = 600 cm

Answer 2

Height of the liquid column = 600 cm