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 \(800~\text{cm}^2.\) If a mass of \(12~\text{kg}\) is placed on the massless piston, then the difference in heights \(h\) of the levels of water in the two tubes will be:
1. | \(10~\text{cm}\) | 2. | \(6~\text{cm}\) |
3. | \(15~\text{cm}\) | 4. | \(2~\text{cm}\) |
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 \((4~\text{cm} \times2 ~\text{cm})\) to \((5 ~\text{cm}\times 4 ~\text{cm})\). If the work done is \(3 \times 10^{-4}~\text{J},\) the value of the surface tension of the liquid is:
1. \(0.25\) N/m
2. \(0.125\) N/m
3. \(0.2\) N/m
4. \(8.0\) N/m