Properties Of Solids And Liquids Question 229

Question: At what speed the velocity head of a stream of water be equal to 40 cm of Hg

Options:

A) 282.8 cm/sec

B) 432.6 cm/sec

C) 632.6 cm/sec

D)832.6 cm/sec

Show Answer

Answer:

Correct Answer: A

Solution:

$ \frac{v^{2}}{2g}=h $ therefore $ v=\sqrt{2gh} $

$ =\sqrt{2\times 10^{3}\times 40} $ =$ 2\sqrt{2}\times 10^{2} $ =$ 282.8\ cm/s $



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