A tank is filled with water up to a height h and the pressure at the bottom of the tank is 3P where P is the atmospheric pressure. The height of a point from the bottom of the tank where pressure is is:
1.
2.
3.
4. None of these
There is a horizontal film of soap solution. On it, a thread is placed in the form of a loop. The film is pierced inside the loop and the thread becomes a circular loop of radius \(R.\) If the surface tension of the loop is \(T,\) then what will be the tension in the thread?
1. \(\dfrac{πR^{2}}{T}\)
2. \(πR^{2} T\)
3. \(2 πRT\)
4. \(2 RT\)
Water flows through a horizontal tube as shown in figure. If the difference in heights of water column in vertical tubes is 80 cm and the area of cross-section at A and B are 5 cm2 and 3 cm2 respectively, then the rate of flow of water at A( in cc/sec) is:-
[ ]
1.
2.
3. 150
4. None of these
An ideal fluid is flowing in a steady-state from section \(A\) to \(B\) through a pipe in a vertical plane as shown. Select the incorrect statement.
| 1. | Total energy per unit volume is the same at both sections A and B. |
| 2. | The incoming flow rate at A is equal to the outgoing flow rate at B. |
| 3. | Loss in kinetic energy of the fluid is equal to gain in potential energy from section A to section B. |
| 4. | The flow of fluid from A to B is laminar flow. |
A hemispherical bowl just floats without sinking in a liquid of density . If the outer diameter and the density of the material of the bowl are 1 m and respectively, then the inner diameter of the bowl will be:
1. 0.94 m
2. 0.97 m
3. 0.98 m
4. 0.99 m