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Statement-1 : The stream of water flowin...

Statement-1 : The stream of water flowing at high speed from a garden hose pipe tends to spread like a foundtion when held vertically up, but tends to narrow down when held vertically down.
Statement-2 : In any steady flow of an incompressible fluid, the volume flow rate of the fluid remain constant.

A

Assertion is True, Reason is True, Reason is a correct explanation for Assertion

B

Assertion is True, Reason is True, Reaosn is not a correct explanation for Assertion

C

Assertion is True, Reason is False

D

Assertion is False, Reason is False.

Text Solution

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The correct Answer is:
A
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STATEMENT-1: 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. STATEMENT-2: In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.

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 up, but tends to narrow down when held vertically down. Explain how?

Statement-1: The stream of water emerging from a wate tap "necks down" as it falls. Statement-2: The volume flow rate at different levels is same.

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A vertical steel rod has radius a. The rod has a coat of a liquid film on it. The liquid slides under gravity. It was found that the speed of liquid layer at radius r is given by v=(rhogb^(2))/(2eta)ln((r)/(a))-(rhog)/(4eta)(r^(2)-a^(2)) Where b is the outer radius of liquid film, eta is coefficient of viscosity and rho is density of the liquid. (i) Calculate the force on unit length of the rod due to the viscous liquid? (ii) Set up the integral to calculate the volume flow rate of the liquid down the rod. [you may not evaluate the integral]

A laminar stream is flowing vertically down from a tap of cross-section area 1cm^(2) . At a distance 10 below the tap, the cross-section area of the stream has reduced to 1//2cm^(2) . Find the volumetric flow rate of water from the tap.

(i) Air (density= rho ) flows through a horizontal venturi tube that discharges to the atmosphere. The area of cross section of the tube is A_(1) and at the constriction it is A_(2) . The constriction is connected to a water (density =rho_(0) ) tank through a vertical pipe of lenght H. Find the volume flow rate (Q) of the air through tube that is needed to just draw the water into the tube. (ii) A non viscous liquid of constant density rho flows in a stremline motion along a tube of variable cross section. The tube is kept inclined in the vertical plane as shown in the figure. The area of cross section of the tube at two points P and Q at heights of h_(1) and h_(2) are respectively A_(1) and A_(2) . The velocity of the liquid at point P is v. Find the work done on a small volume DeltaV of fluid by the neighbouring fluid as the small volume moves from P to Q.

TARGET PUBLICATION-FRICTION IS SOLIDS AND LIQUIDS -MCQ (COMPETITIVE THINKING)
  1. A viscous fluid is flowing through a cylindrical tube. The velocity di...

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  2. In stream line flow of liquid, the total energy of liquid constant at ...

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  3. Statement-1 : The stream of water flowing at high speed from a garden ...

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  4. When a body falls in air, the resistance of air depends to a great ex...

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  5. Water is flowing through a tube of non-uniform cross-section ratio of ...

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  6. An ideal fluid flows through a pipe of circular cross section with dia...

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  7. The cylindrical tube of a spray pump has radius R, one end of which ha...

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  8. Water is flowing continuously from a tap having an internal diameter 8...

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  9. Velocity of water in a river is

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  10. The velocity of water in river is 9 km/h of the upper surface . The ri...

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  11. A metal plate of area 500 cm^92) is kept on a horizontal surface with ...

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  12. Spherical balls of radius 'R' are falling in a viscous fluid of viscos...

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  13. A gas bubble of 2 cm diameter rises through a liquid 1.75 gm cm^(-3) w...

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  14. What will be the approximate terminal velocity of a rain drop of diamt...

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  15. A solid ball of volume V is dropped in a viscous liquid. It e...

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  16. A small spherical solid ball is dropped from a great height in a visco...

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  17. A small metal ball of mass m is dropped in a liquid contained in a ves...

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  18. A small sphere of mass m is dropped from a height After it has fallen ...

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  19. The terminal speed of a sphere of gold (density = 19.5 kg m^(-3)) is 0...

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  20. Two solid spheres of same metal but of mass M and 8M fall simultaneous...

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