An incompressible liquid travels as shown in the figure. The speed of the fluid in the lower branch will :
1. 1 m/s
2. 1.5 m/s
3. 2.25 m/s
4. 3 m/s
Equation of continuity based on :
1. Conservation of mass
2. Conservation of energy
3. Conservation of angular momentum
4. None of these
The area of cross-section of the wider tube shown in the figure is If a mass of 12 kg is placed on the massless piston, then the difference in heights h of the levels of water in the two tubes will be:
1. | 10 cm | 2. | 6 cm |
3. | 15 cm | 4. | 2 cm |
Water flows through a frictionless duct with a cross-section varying as shown in the figure. Pressure p at points along the axis is represented by
1. 2.
3. 4.
A small spherical solid ball is dropped in a viscous liquid. Its journey in the liquid is best described in the figure by :
1. Curve A
2. Curve B
3. Curve C
4. Curve D
The rate of flowing of water from the orifice in a wall of a tank will be more if the orifice is:
1. Near the bottom
2. Near the upper end
3. Exactly in the middle
4. Does not depend upon the position of the orifice
Water flowing from a hose pipe fills a 15-liter container in one minute. The speed of water from the free opening of radius 1 cm is (in ms) :
1. 2.5
2.
3.
4. 5
The flow rate from a tap of diameter 1.25 cm is 3 lit/min. The coefficient of viscosity of water is Pas. The nature of flow is :
1. Turbulent
2. Laminar
3. Neither laminar nor turbulent
4. data inadequate
If there were a smaller gravitational effect, which of the following forces do you think would alter in some respect?
(1) Viscous forces
(2) Archimedes uplift
(3) Electrostatic force
(4) None of the above
A rectangular film of liquid is extended from (4 cm ) to \((4 ~\text{cm}\times 5 ~\text{cm})\). If the work done is J, the value of the surface tension of the liquid is:
1. | 0.250 Nm-1 | 2. | 0.125 Nm-1 |
3. | 0.2 Nm-1 | 4. | 8.0 Nm-1 |