A liquid is flowing through a non-sectional tube with its axis horizontally. If two points X and Y on the axis of tube has a sectional area 2.0 cm^ 3 and 25 mm^ 2 respectively then find the flow velocity at Y when the

Correct answer: C. 80 m / s According to principle of continuity v_ y = v_ x A_ x A_ y = 10(m / s) × 2(c m^ 2 ) 25 × 10^ -2 (c m^ 2 ) =80 m / s

BITSAT 2009

BITSAT 2009 · Physics · Mechanical Properties of Fluids

A liquid is flowing through a non-sectional tube with its axis...

A liquid is flowing through a non-sectional tube with its axis horizontally. If two points

\mathrm{X}

and

\mathrm{Y}

on the axis of tube has a sectional area

2.0 \mathrm{ cm}^{3}

and

25 \mathrm{ mm}^{2}

respectively then find the flow velocity at

Y

when the flow velocity at

X

10 \mathrm{ m} / \mathrm{s}

C. $80 \mathrm{ m} / \mathrm{s}$

According to principle of continuity v_{y}=

\frac{v_{x} A_{x}}{A_{y}}=\frac{10(m / s) \times 2\left(c m^{2}\right)}{25 \times 10^{-2}\left(c m^{2}\right)}=80 \mathrm{ m}

\mathrm{s}