Properties Of Solids And Liquids Question 210

Question: Water is moving with a speed of 5.18 ms?1 through a pipe with a cross-sectional area of 4.20 cm2. The water gradually descends 9.66 m as the pipe increase in area to 7.60 cm2. The speed of flow at the lower level is

Options:

A)3.0 ms?1

B)5.7 ms?1

C)3.82 ms?1

D)2.86 ms?1

Show Answer

Answer:

Correct Answer: D

Solution:

$ a _{1}v _{1}=a _{2}v _{2} $

therefore $ 4.20\times 5.18=7.60\times v _{2}\Rightarrow v _{2}=2.86\ m/s $



NCERT Chapter Video Solution

Dual Pane