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 |
Water flows through a frictionless tube with a varying cross-section as shown in the figure. Variation of pressure P at point x along the axis is roughly given by:
1. | 2. | ||
3. | 4. |
Two soap bubbles are connected by a tube as shown in the figure. Which of the following statement is true?
1. | The volume of A will increase. | 2. | The volume of A will remain constant. |
3. | The volume of B will increase. | 4. | The volume of B will decrease. |
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
The velocity of a small ball of mass m and density when dropped in a container filled with glycerin of density becomes constant after sometime. The viscous force acting on the ball in the final stage is:-
1.
2.
3.
4. mg