NEET Physics Pressure in Fluids MCQ Question
A tank with a large cross-sectional area open to the atmosphere has a small hole at the bottom. If the height of the water column above the hole is 5 meters, what is the speed of efflux of water from the hole? (Take g = 9.8 m/s²)
9.9 m/s
15.6 m/s
7.0 m/s
22.1 m/s
Correct Answer
Detailed Explanation
Using Torricelli's law, the speed of efflux v = √(2gh). Here, h = 5 m and g = 9.8 m/s², so v = √(2 * 9.8 * 5) ≈ 9.9 m/s.
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