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. | \(4\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA tank is filled with water up to a height \(\mathrm H.\) Water is allowed to come out of a hole \(\mathrm P\) in one of the walls at a depth \(\mathrm D\) below the surface of water. Express the horizontal distance \(\mathrm{x}\) in terms of \(\mathrm H\) and \(\mathrm {D}\text :\)
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe pressure of water in a water pipe when tap is opened and closed are respectively \(3\times10^5\) Nm–2 and \(3.5\times10^5\) Nm–2. With open tap, the velocity of water flowing is:
1. \(10\) ms–1
2. \(5\) ms–1
3. \(20\) ms–1
4. \(15\) ms–1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe following fig. shows the flow of liquid through a horizontal pipe. Three tubes A, B and C are connected to the pipe. The radii of the tubes A, B and C at the junction are respectively 2 cm, 1 cm and 2 cm. It can be said that the:
1. | Height of the liquid in the tube A is maximum |
2. | Height of the liquid in the tubes A and B is the same |
3. | Height of the liquid in all the three tubes is the same |
4. | Height of the liquid in the tubes A and C is the same |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThere 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe velocity of kerosene oil in a horizontal pipe is 5 m/s. If , then the velocity head of oil will be:
1. 1.25 m
2. 12.5 m
3. 0.125 m
4. 125 m
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA small hole of an area of cross-section \(2~\text{mm}^2\) is present near the bottom of a fully filled open tank of height \(2~\text{m}\). Taking \(g = 10~\text{m/s}^2\), the rate of flow of water through the open hole would be nearly:
1. \(6.4\times10^{-6}~\text{m}^{3}/\text{s}\)
2. \(12.6\times10^{-6}~\text{m}^{3}/\text{s}\)
3. \(8.9\times10^{-6}~\text{m}^{3}/\text{s}\)
4. \(2.23\times10^{-6}~\text{m}^{3}/\text{s}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe speed of flow past the lower surface of a wing of an aeroplane is 50 m/s. What speed of flow over the upper surface will give a dynamic lift of 1000 Pa? (Density of air = 1.3 kg/m3):
1. 25.55 m/s
2. 63.55 m/s
3. 13.25 m/s
4. 6.355 m/s
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWater 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn engine pumps water continuously through a hose. Water leaves the hose with a velocity \(v\) and \(m\) is the mass per unit length of the water jet. What is the rate at which kinetic energy is imparted to water?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology