A non-viscous incompressible liquid is flowing from a horizontal pipe of non-uniform cross section as shown, Choose the correct options:

speed of liquid at section-2 is more

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volume of liquid flowing per second from section-2 is more

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mass of liquid flowing per second at both the sections is same

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pressure at section-2 is less

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Solution

The correct options are
B mass of liquid flowing per second at both the sections is same
C speed of liquid at section-2 is more
D pressure at section-2 is less
From continuity equation Av=constant
$v_{2} > v_{1}$ as $A_{2} < A_{1}$
From Bernoulli's equation,
$p + \frac{1}{2} ρ v^{2} =$ constant (as h=constant)
$p_{2} < p_{1}$ as $v_{2} > v_{2}$

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