Question 51: Properties of Matter

Question

A tube of length $L$ is shown in the figure. The radius of cross section at the point $(1)$ is 2 cm and at the point (2) is 1 cm , respectively. If the velocity of water entering at point (1) is $2 \mathrm{~m} / \mathrm{s}$, then velocity of water leaving the point (2) will be

Accepted Answer

$$\begin{aligned}
& \mathrm{A}_1 \mathrm{v}_1=\mathrm{A}_2 \mathrm{~V}_2 \Rightarrow 2 \pi(2 \mathrm{R})^2=\mathrm{V}_2 \pi \mathrm{R}^2 \
& 	herefore \mathrm{~V}_2=8 \mathrm{~m} / \mathrm{s}
\end{aligned}$$

Answer

4 m/s

Answer

6 m/s

Answer

2 m/s

Answer

8 m/s

Properties of Matter

A tube of length L is shown in the figure. The radius of cross section at the point (1) is 2 cm and at the point (2) is 1 cm , respectively. If the velocity of water entering at point (1) is 2 \mathrm{~m} / \mathrm{s}, then velocity of water leaving the point (2) will be

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