Question

Motion of an oscillating liquid column in a U-tube is

• A. Periodic but not simple harmonic
• B. Non-periodic
• C. Simple harmonic and time period is independent of the density of the liquid
• D. Simple harmonic and time period is directly proportional to the density of the liquid.

Answer 1

Answer: (C)

Simple harmonic and time period is independent of the density of the liquid

Answer 2

As $T = 2\pi\sqrt{1/g}$ (where l is the length of the oscillating liquid column in each limb, it is independent of the density of the liquid.)