Equation of Continuity
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360900 A lawn sprinkler has 20 holes, each of cross -
sectional area \(2.0 \times {10^{ - 2}}\;c{m^2}\), and is connected to a hose pipe of cross sectional area \(2.4\;\,c{m^2}\). If the speed of water in the hose pipe is \(1.5\;\,m{s^{ - 1}}\), the speed of water as it emerges from the holes in \(m/s\) is

1 5
2 10
3 9
4 7
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360901 Assertion :
The stream of water flowing at high speed from a garden hose pipe tends to spread like a fountain when held vertically up, but tends to narrow down when held vertically down.
Reason :
In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360902 An ideal fluid flows through a pipe of circular cross-section made of two sections with diameters \(2.5\;cm\) and \(3.75\;cm\). The ratio of the velocities in the two pipes is

1 \(9: 4\)
2 \(3: 2\)
3 \(\sqrt{3}: \sqrt{2}\)
4 \(\sqrt{2}: \sqrt{3}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360903 An ideal fluid flows through a pipe of circular cross section with diameters \(5\;cm\) and \(10\;cm\) as shown. The ratio of velocities of fluid at \(A\) and \(B\) is
supporting img

1 \(4: 1\)
2 \(1: 4\)
3 \(2: 1\)
4 \(1: 2\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360904 The rate of flow of the liquid is the product of

1 Area of cross section of the liquid and velocity of the liquid.
2 Length of the tube of the flow and velocity of the liquid.
3 Volume of the tube of the flow and velocity of the liquid.
4 Viscous force acting on the liquid layer and velocity of the liquid
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360900 A lawn sprinkler has 20 holes, each of cross -
sectional area \(2.0 \times {10^{ - 2}}\;c{m^2}\), and is connected to a hose pipe of cross sectional area \(2.4\;\,c{m^2}\). If the speed of water in the hose pipe is \(1.5\;\,m{s^{ - 1}}\), the speed of water as it emerges from the holes in \(m/s\) is

1 5
2 10
3 9
4 7
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360901 Assertion :
The stream of water flowing at high speed from a garden hose pipe tends to spread like a fountain when held vertically up, but tends to narrow down when held vertically down.
Reason :
In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360902 An ideal fluid flows through a pipe of circular cross-section made of two sections with diameters \(2.5\;cm\) and \(3.75\;cm\). The ratio of the velocities in the two pipes is

1 \(9: 4\)
2 \(3: 2\)
3 \(\sqrt{3}: \sqrt{2}\)
4 \(\sqrt{2}: \sqrt{3}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360903 An ideal fluid flows through a pipe of circular cross section with diameters \(5\;cm\) and \(10\;cm\) as shown. The ratio of velocities of fluid at \(A\) and \(B\) is
supporting img

1 \(4: 1\)
2 \(1: 4\)
3 \(2: 1\)
4 \(1: 2\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360904 The rate of flow of the liquid is the product of

1 Area of cross section of the liquid and velocity of the liquid.
2 Length of the tube of the flow and velocity of the liquid.
3 Volume of the tube of the flow and velocity of the liquid.
4 Viscous force acting on the liquid layer and velocity of the liquid
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360900 A lawn sprinkler has 20 holes, each of cross -
sectional area \(2.0 \times {10^{ - 2}}\;c{m^2}\), and is connected to a hose pipe of cross sectional area \(2.4\;\,c{m^2}\). If the speed of water in the hose pipe is \(1.5\;\,m{s^{ - 1}}\), the speed of water as it emerges from the holes in \(m/s\) is

1 5
2 10
3 9
4 7
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360901 Assertion :
The stream of water flowing at high speed from a garden hose pipe tends to spread like a fountain when held vertically up, but tends to narrow down when held vertically down.
Reason :
In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360902 An ideal fluid flows through a pipe of circular cross-section made of two sections with diameters \(2.5\;cm\) and \(3.75\;cm\). The ratio of the velocities in the two pipes is

1 \(9: 4\)
2 \(3: 2\)
3 \(\sqrt{3}: \sqrt{2}\)
4 \(\sqrt{2}: \sqrt{3}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360903 An ideal fluid flows through a pipe of circular cross section with diameters \(5\;cm\) and \(10\;cm\) as shown. The ratio of velocities of fluid at \(A\) and \(B\) is
supporting img

1 \(4: 1\)
2 \(1: 4\)
3 \(2: 1\)
4 \(1: 2\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360904 The rate of flow of the liquid is the product of

1 Area of cross section of the liquid and velocity of the liquid.
2 Length of the tube of the flow and velocity of the liquid.
3 Volume of the tube of the flow and velocity of the liquid.
4 Viscous force acting on the liquid layer and velocity of the liquid
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360900 A lawn sprinkler has 20 holes, each of cross -
sectional area \(2.0 \times {10^{ - 2}}\;c{m^2}\), and is connected to a hose pipe of cross sectional area \(2.4\;\,c{m^2}\). If the speed of water in the hose pipe is \(1.5\;\,m{s^{ - 1}}\), the speed of water as it emerges from the holes in \(m/s\) is

1 5
2 10
3 9
4 7
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360901 Assertion :
The stream of water flowing at high speed from a garden hose pipe tends to spread like a fountain when held vertically up, but tends to narrow down when held vertically down.
Reason :
In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360902 An ideal fluid flows through a pipe of circular cross-section made of two sections with diameters \(2.5\;cm\) and \(3.75\;cm\). The ratio of the velocities in the two pipes is

1 \(9: 4\)
2 \(3: 2\)
3 \(\sqrt{3}: \sqrt{2}\)
4 \(\sqrt{2}: \sqrt{3}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360903 An ideal fluid flows through a pipe of circular cross section with diameters \(5\;cm\) and \(10\;cm\) as shown. The ratio of velocities of fluid at \(A\) and \(B\) is
supporting img

1 \(4: 1\)
2 \(1: 4\)
3 \(2: 1\)
4 \(1: 2\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360904 The rate of flow of the liquid is the product of

1 Area of cross section of the liquid and velocity of the liquid.
2 Length of the tube of the flow and velocity of the liquid.
3 Volume of the tube of the flow and velocity of the liquid.
4 Viscous force acting on the liquid layer and velocity of the liquid
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360900 A lawn sprinkler has 20 holes, each of cross -
sectional area \(2.0 \times {10^{ - 2}}\;c{m^2}\), and is connected to a hose pipe of cross sectional area \(2.4\;\,c{m^2}\). If the speed of water in the hose pipe is \(1.5\;\,m{s^{ - 1}}\), the speed of water as it emerges from the holes in \(m/s\) is

1 5
2 10
3 9
4 7
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360901 Assertion :
The stream of water flowing at high speed from a garden hose pipe tends to spread like a fountain when held vertically up, but tends to narrow down when held vertically down.
Reason :
In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360902 An ideal fluid flows through a pipe of circular cross-section made of two sections with diameters \(2.5\;cm\) and \(3.75\;cm\). The ratio of the velocities in the two pipes is

1 \(9: 4\)
2 \(3: 2\)
3 \(\sqrt{3}: \sqrt{2}\)
4 \(\sqrt{2}: \sqrt{3}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360903 An ideal fluid flows through a pipe of circular cross section with diameters \(5\;cm\) and \(10\;cm\) as shown. The ratio of velocities of fluid at \(A\) and \(B\) is
supporting img

1 \(4: 1\)
2 \(1: 4\)
3 \(2: 1\)
4 \(1: 2\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360904 The rate of flow of the liquid is the product of

1 Area of cross section of the liquid and velocity of the liquid.
2 Length of the tube of the flow and velocity of the liquid.
3 Volume of the tube of the flow and velocity of the liquid.
4 Viscous force acting on the liquid layer and velocity of the liquid