A steady flow of water passes along a horizontal tube from a wide section $X$ to the narrower section $Y$, see figure. Manometers are placed at $P$ and $Q$ at the sections. Which of the statements $A, B, C, D, E$ is most correct?
, Diffcult
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From Bernoulli's theroem
$P_{1}+\frac{1}{2} \rho v_{1}^{2}=P_{2}+\frac{1}{2} \rho v_{2}^{2}$
and from equation of continuity
$v_{y}>v_{x} \quad \Rightarrow \quad P_{x}>P_{y} \quad \Rightarrow \quad K E_{y}>K E_{x}$
so option $D$ is correct.
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