Question

A U tube open at both ends contains Hg. 15 cm of water is added in left arm. Find the difference in the height of two levels.

• A. 1.1 cm
• B. 13.9 cm
• C. 7 cm
• D. 8 cm

Answer 1

Answer: (B)

13.9 cm

Answer 2

13.6 × y × Ag = 1 × 15 × A × g

y = $\frac{15}{13.6}$ and h =15 - $\frac{15}{13.6}$ = 13.9 cm