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Q.

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

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a

Speed of liquid at section 2 is more

b

Volume of liquid flowing per second from section 2 is more

c

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

d

Pressure at section 2 is less

answer is A, C, D.

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Detailed Solution

From continuity equation, Av=constant

v2>v1 or A2<A1

From Bernoulli's equation, 

p+12ρv2=constant      (as h=constant) p2<p1  as v2>v1

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