NEETPhysicsProperties of MatterMCQ+4 / −1
An ideal fluid is flowing in a non-uniform cross-sectional tube (as shown in the figure) from end to end . If and are the kinetic energy per unit volume of the fluid at and respectively, then the correct option is :
- A
- B
- C
- D
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Correct answer: C
According to Bernoulli's principle,
Kinetic energy per unit volume + Potential energy per unit volume + Pressure $=$ Constant
$$\frac{1}{2} \rho V^2+\rho g h+P=\text { constant }$$
Apply Bernoulli's principle at point $X$ and $Y$,
$$\begin{aligned} & P+K_1+\rho g(0)=P+K_2+\rho g(\mathrm{~h}) \\ & K_1=K_2+\rho g h \\ & K_1>K_2 \end{aligned}$$
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