Two liquids L1 and L2 are contained in a U – tube. The height and the density of L1 are 8 cm and 103 kgm-3 respectively. If the density of L2 is 800 kgm-3, its height measured from the same level is
-
A.
8 cm -
B.
10 cm -
C.
16 cm -
D.
12 cm
Correct Answer: Option B
Explanation
Generally, from Hares Experiment, density is inversely proportional to height
i.e h ∝1/d; → h1d1 = h2d2
∴ 8 x 103 = h2 x 800
| ∴ h2 = | 8 x 103 |
| _800 |
= 10cm