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Figure shows a siphon, the vessel area is very large compared to cross section of tube. Tube has uniform cross-sectional area, it’s lower end is 5m below the surface of water and upper end of siphon is at height H from water surface. (Density of water = $10^{3} k g / m^{3}$ , atmospheric pressure = $10^{5} P a, g = 10 m / s^{2}$ )

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Velocity of efflux will be 10m/s, for all values of H.

Velocity of efflux will be 10m/s, for H=2m.

If H > 5m the siphon will not work.

As H increases from 1 m to 3m, velocity of efflux decreases.

answer is B, C.

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Detailed Solution

$ϑ = \sqrt{2 g \times 5} (H + 5) \leq \frac{P_{0}}{σ g}$

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