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 |
When a large bubble rises from the bottom of a lake to the surface, its radius doubles. The atmospheric pressure is equal to that of a column of water of height H. The depth of the lake is:
1. H
2. 2H
3. 7H
4. 8H
The reading of a spring balance when a block is suspended from it in the air is 60 N. This reading is changed to 40 N when the block is submerged in water. The specific gravity of the block, therefore, must be:
1. 3
2. 2
3. 6
4. 3/2
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° |
From the given diagram, the velocity \(v_3\) is:
1. \(4\) m/s | 2. \(3\) m/s |
3. \(1\) m/s | 4. \(2\) m/s |
From the given diagram, the speed with which water leaves the tube B of small diameter is-
1. | \(\sqrt{2 \left(gh\right)_{1}}\) | 2. | \(\sqrt{2 \left(gh\right)_{2}}\) |
3. | \(\sqrt{2 g \left(h_{1} + h_{2}\right)}\) | 4. | \(\sqrt{2 g \left(h_{2} - h_{1}\right)}\) |
An iron sphere is dropped into a viscous liquid. Which of the following represents its acceleration (a) versus time (t) graph?
1. | 2. | ||
3. | 4. |
The diameter of a syringe is 4 mm and the diameter of its nozzle (opening) is 1 mm. The syringe is placed on the table horizontally at a height of 1.25 m. If the piston is moved at a speed of 0.5 m/s, then considering the liquid in the syringe to be ideal, the horizontal range of liquid is: (g = 10 m/)
1. 4 m
2. 8 m
3. 0.4 m
4. 0.2 m
A water tank is kept at a height H above the ground and the tank contains depth H of water as shown. Find the maximum possible range of water current, if there exists a small hole on the sidewall of the tank.
1. | 2H | 2. | |
3. | 4. | H |