There is an orifice at some depth in the water tank. Absolute pressure at the level of the orifice in the water tank is 4 atmospheric pressure. The density of water is and 1 atm pressure = N/. The speed of water coming out of the orifice is:
1. 10 m/s
2. 20 m/s
3. 10 m/s
4. 10 m/s
A block weighs 5 N in air and 4.5 N in a liquid of specific gravity 0.5. Its weight in water will be:
1. 3.5 N
2. 4.0 N
3. 2.5 N
4. 3.0 N
A liquid is poured into three vessels of the same base area and equal heights as shown in the figure, then:
1. | The maximum force on the base will be for the vessel \(C.\) |
2. | The maximum force on the base will be for the vessel \(B.\) |
3. | The maximum force on the base will be for the vessel \(A.\) |
4. | Force on the base will be equal for all the vessels. |
The relative velocity of two adjacent layers of a liquid is \(6\) cm/s and the perpendicular distance between layers is \(0.1~\text{mm}.\) The velocity gradient for liquid (in per second) is:
1. \(6\)
2. \(0.6\)
3. \(0.06\)
4. \(600\)
A large open tank with a square hole of side \(0.1\) cm in the wall at a depth of \(0.2\) m from the top is completely filled with a liquid. The rate of flow of liquid (in /s) through the hole will be:
1. | \(1\) | 2. | \(2\) |
3. | \(3\) | 4. | \(4\) |
When a man sits on a boat of length 2 m and breadth 1 m floating on a lake, the boat sinks by 2 cm. The mass of the man is:
1. 25 kg
2. 40 kg
3. 60 kg
4. 80 kg
There are four cylindrical vessels identical in dimensions. If these are filled with equal masses of four different liquids P, Q, R, and S such that their densities are , then pressure at the base of vessel will be:
1. | 2. | ||
3. | 4. | Data is insufficient to predict the relation |
A beaker full of water is placed on a spring balance. If we put our finger in water without touching the beaker, how will the reading of the balance change? [Take ]
1. Increase
2. Decrease
3. Remain the same
4. Will be halved
If a capillary tube is partially dipped vertically into liquid and the levels of the liquid inside and outside are same, then the angle of contact is:
1. | 90° | 2. | 30° |
3. | 45° | 4. | 0° |