Question

The height of liquid column in a U-tube is $0.3m$. If the liquid is one of the limbs is depressed and then released, then the time period of liquid column will be

• A. $0.11s$
• B. $1.1s$
• C. $2s$
• D. $19s$

Answer 1

Answer: (B)

$1.1s$

Height of liquid column in U-tube $L=0.3m$

Time period of liquid column $T=2\pi \sqrt{\frac{L}{g}}$

$T=2\pi \sqrt{\frac{0.3}{9.8}}=2\times 3.14\times 0.175s$

$⟹T=1.1s$