SATHEE: Properties Of Solids And Liquids Question 208

Properties Of Solids And Liquids Question 208

Question: Two water pipes of diameters 2 cm and 4 cm are connected with the main supply line. The velocity of flow of water in the pipe of 2 cm diameter is[MNR 1980]

Options:

A)4 times that in the other pipe

B) $\frac{1}{4}$ times that in the other pipe

C)2 times that in the other pipe

D) $\frac{1}{2}$ times that in the other pipe

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Answer:

Correct Answer: A

Solution:

$d_{A} = 2 c m$ and $d_{B} = 4 c m$

$∴ r_{A} = 1 c m$ and $r_{B} = 2 c m$

From equation of continuity,av = constant

$\frac{v_{A}}{v_{B}} = \frac{a_{B}}{a_{A}} = \frac{π {(r_{B})}^{2}}{π {(r_{A})}^{2}} = {(\frac{2}{1})}^{2} \Rightarrow v_{A} = 4 v_{B}$

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Properties Of Solids And Liquids Question 208

Question: Two water pipes of diameters 2 cm and 4 cm are connected with the main supply line. The velocity of flow of water in the pipe of 2 cm diameter is[MNR 1980]

Options:

Answer:

Solution:

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