NEET Physics Mechanical Properties Of Fluids MCQs

🎯Topic:Equation Of Continuty, Bernoullis Theorem

🎯Difficulty :Hard

🔄Ncert Concepts :Bernoulli's Theorem, Torricelli's Law, Projectile Motion

A large container holds water to a depth of 2 meters. A small hole is punched in the side of the container, 0.5 meters from the bottom. Which of the following will increase the velocity of the water flowing out of the hole (ignoring viscous effects)?

Increasing the size of the hole

Decreasing the size of the hole

Increasing the depth of water in the container

Decreasing the distance of the hole from the bottom

Question Tags

🎯Topic:Equation Of Continuty, Bernoullis Theorem

⚡ Time Required :1.5 mins

🔄Ncert Concepts :Bernoulli's Theorem, Torricelli's Law, Fluid Dynamics

A large open tank has two holes in the wall. One is a square hole of side L at a depth y from the top and the other is a circular hole of radius R at a depth of 9y from the top. When the tank is completely filled with water quantities of water flowing out per second from both the holes is the same . Then R is equal to

$3\pi L$

$\frac{L}{{3\pi }}$

$\frac{L}{{\sqrt {3\pi } }}$

$\frac{L}{{\sqrt 3 \pi }}$

Question Tags

🔄Ncert Concepts :Fluid dynamics, Torricelli's Law, Area of square, Area of circle

$3\pi L$

$\frac{L}{{3\pi }}$

$\frac{L}{{\sqrt {3\pi } }}$

$\frac{L}{{\sqrt 3 \pi }}$

Question Tags

🔄Ncert Concepts :Torricelli's Law, Fluid Flow Rate, Area of Square, Area of Circle

A water tank, open to the atmosphere, has a leak in it, in the form of a circular hole, located at a height h below the open surface of water. The velocity of the water coming out of the hole is

$\sqrt {gh/2}$

$\sqrt {gh}$

$\sqrt {2gh}$

$2\sqrt {gh}$

Question Tags

⚡ Time Required :2 mins

🔄Ncert Concepts :Torricelli's Law, fluid dynamics, Bernoulli's principle, conservation of energy

The level of water in a tank is 5 m high. A hole of area $10{\rm{c}}{{\rm{m}}^2}$ is made in the bottom of the tank. The rate of leakage of water from the hole is

${10^{ - 2}}{{\rm{m}}^3}{{\rm{s}}^{ - 1}}$

${10^2}{{\rm{m}}^3}{{\rm{s}}^{ - 1}}$

$10{{\rm{m}}^3}{{\rm{s}}^{ - 1}}$

${10^{ - 2}}{{\rm{m}}^{ - 3}}{{\rm{s}}^{ - 1}}$

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⚡ Time Required :2 mins

🔄Ncert Concepts :Torricelli's law, volumetric flow rate, unit conversion

A cylinder drum, open at the top, contains 15 L of water. It drains out through a small opening at the bottom. 5 L of water comes out in time ${t_1}$ , the next 5 L in further time ${t_2}$ and the last 5 L in further time ${t_3}$ . Then

${t_1} < {t_2} < {t_3}$

${t_1} > {t_2} > {t_3}$

${t_1} = {t_2} = {t_3}$

${t_1} > {t_2} = {t_3}$

Question Tags

🎓 Ncert Level:Analyzing

⚡ Time Required :2 mins

🔄Ncert Concepts :Fluid Dynamics, Torricelli's Law, Rate of Flow

A cylindrical tank has a hole of $1c{m^2}$ in its bottom. If the water is allowed to flow into the tank from a tube above it at the rate of $70c{m^3}/\sec$ . then the maximum height up to which water can rise in the tank is

$2.5cm$

$5cm$

$10cm$

$0.25cm$

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