Welcome to your Grade 12 Physics chapter 3
After carefully reading the following 30 questions, choose the correct answer.
1.
Which of the following is defined as the force per unit area exerted by a fluid?
2.
What is the SI unit for pressure?
3.
According to Archimedes' principle, the buoyant force on a submerged object is equal to:
4.
Which principle states that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid?
5.
How does the pressure in a liquid at rest vary with depth?
6.
What instrument is used to measure atmospheric pressure?
7.
Which equation describes the conservation of mass for a fluid flowing through a pipe with varying cross-sectional areas?
8.
According to Bernoulli's principle, what happens to the pressure in a fluid as its speed increases?
9.
What is the density of an object that has a mass of 500 kg and occupies a volume of 2 cubic meters?
10.
Which of the following is a characteristic of an "ideal fluid"?
11.
What term describes the internal resistance of a fluid to flow?
12.
The absolute pressure is equal to the sum of:
13.
For a floating object, how does the buoyant force relate to the object's weight?
14.
Which type of flow is characterized by smooth paths of fluid particles that do not cross?
15.
What happens to the lift on an airplane wing if the air speed over the top of the wing increases relative to the bottom?
16.
The hydraulic lift is a practical application of which principle?
17.
Which factor does NOT affect the pressure at the bottom of a container filled with liquid?
18.
What is the formula for pressure (P) due to a liquid column of height (h) and density (ρ)?
19.
A manometer is primarily used to measure:
20.
Which of the following defines "Relative Density"?
21.
In the equation A₁v₁ = A₂v₂, what does "A" represent?
22.
What is "Gauge Pressure"?
23.
If a pipe narrows, what happens to the speed of an incompressible fluid flowing through it?
24.
Surface tension in liquids is caused by:
25.
An object sinks in a fluid if:
26.
The SI unit for density is:
27.
Bernoulli's equation is essentially a statement of:
28.
Which of the following is an example of turbulent flow?
29.
What is the standard atmospheric pressure at sea level in Pascals?
30.
High blood pressure in humans is an application of which branch of physics?
