A two-meter-high tank is full of water. A hole is made in the middle of the tank. The speed of efflux is:
Correct answer: C. 4.42ms-1
- A. 4.9ms-1
- B. 9.8ms-1
- C. 4.42ms-1
- D. 3.75ms-1
Explanation
At the tank mid-height h = 1.00 m, Torricelli's theorem gives v = √(2gh). Using g ≈ 9.8 m/s², v = √(2×9.8×1) = √19.6 ≈ 4.43 m/s. This matches option C. and is the ideal efflux speed neglecting viscosity and losses.
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