Water and Kerosine are drawn respectively into the two limbs of a Hare’s apparatus. The destiny of water is 1.0gcm−3 and the density of kerosine is 0.80gcm−3. If the height of the water column is 20.0cm, calculate the height of the kerosine column.

A. 1.6cm
B. 16.0cm
C. 20.0cm
D. 25.0cm

Correct Answer: Option D

Explanation

Devices with different liquids

d1h1 = d2h2
1 × 20 = 0.8 × h

h = 20/0.8
= 25cm