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Quizzes > Quizzes for Business > Education

Secondary Physics Knowledge Assessment Quiz

Test Your Understanding of Physics Principles

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art depicting elements related to a Secondary Physics Knowledge Assessment quiz

Welcome to the Secondary Physics Knowledge Assessment, a free practice quiz created to sharpen your physics skills and prepare you for advanced study. Ideal for students seeking a targeted physics assessment, this quiz features engaging questions that challenge your understanding of mechanics, electricity, and more. After finishing, you'll gain clear insights into areas to review and the confidence to tackle complex problems. Feel free to personalize every question in our editor to suit your learning style, explore similar Physics Mechanics Practice Quiz or dive deeper with the Physics Fundamentals Assessment Quiz. Discover all our quizzes and keep your physics journey moving forward!

What is the SI unit of force?
Pascal
Watt
Joule
Newton
The SI unit of force is the Newton, defined as kg·m/s². Joule is the unit of energy, Pascal is pressure, and Watt is power.
If an object moves at a constant velocity, what is the net force acting on it?
ma
mg
0 N
mv
Newton's first law states that an object moving at constant velocity has zero net force. mg is the weight, ma applies when there is acceleration, and mv is momentum not force.
Which of the following quantities is a scalar?
Speed
Velocity
Acceleration
Displacement
Speed has magnitude only and is a scalar. Velocity, acceleration, and displacement are all vectors because they include direction.
What is the approximate value of gravitational acceleration at Earth's surface?
9.8 N
9.8 m/s²
9.8 kg
9.8 m/s
Gravitational acceleration g has units of m/s² at approximately 9.8. The other units listed do not represent acceleration.
What is the formula for gravitational potential energy of an object of mass m at height h?
1/2 mv²
mg+h
mgh²
mgh
Gravitational potential energy is given by mgh. ½mv² is kinetic energy and the other expressions are incorrect.
A 10 kg object experiences a net force of 20 N. What is its acceleration?
20 m/s²
200 m/s²
2 m/s²
0.5 m/s²
By Newton's second law, a = F/m = 20 N / 10 kg = 2 m/s². The other options arise from incorrect division or unit errors.
A car with an initial velocity of 5 m/s accelerates at 2 m/s² for 3 s. What distance does it travel?
24 m
9 m
17 m
30 m
Using s = ut + ½at² gives 5×3 + ½×2×9 = 24 m. Other answers reflect misapplication of the kinematic equation.
A block slides from rest at height 5 m on a frictionless incline. What is its speed at the bottom? (use g=9.8 m/s²)
19.6 m/s
5.0 m/s
9.9 m/s
4.9 m/s
Conservation of energy gives mgh = ½mv², so v = √(2gh) ≈ 9.9 m/s. Other values ignore the factor of 2 or misapply the formula.
Light travels from air (n=1.0) into glass (n=1.5) with an incident angle of 30°. What is the refracted angle in the glass?
60°
45°
30°
19.5°
Snell's law gives sin r = (1.0/1.5) sin 30° ≈ 0.333, so r ≈ 19.5°. Other angles ignore the change in speed in glass.
An object is placed 30 cm from a converging lens with focal length 10 cm. Where is the image formed?
10 cm from lens
20 cm from lens
-15 cm from lens
15 cm from lens
Lens equation 1/f = 1/u + 1/v gives 1/v = 1/10 - 1/30 = 2/30, so v = 15 cm real. Other values come from algebraic errors.
Which of the following describes an adiabatic process for an ideal gas?
Pressure remains constant
No heat exchange occurs
Volume remains constant
Temperature remains constant
An adiabatic process has Q = 0, meaning no heat is transferred. Isothermal, isobaric, and isochoric processes keep temperature, pressure, or volume constant, respectively.
What is the equivalent resistance of two resistors, 4 Ω and 6 Ω, connected in parallel?
10 Ω
2.4 Ω
5 Ω
1.5 Ω
Parallel resistance is given by (4×6)/(4+6) = 2.4 Ω. 10 Ω is the series sum, and the others result from incorrect formulas.
What is the magnitude of the magnetic force on a proton (q=1.6×10❻¹❹ C) moving at 1×10❶ m/s perpendicular to a 0.5 T magnetic field?
1×10❻❶ N
3.2×10❻¹❹ N
8×10❻¹❴ N
8×10❻¹³ N
Force equals qvB = 1.6×10❻¹❹×10❶×0.5 = 8×10❻¹❴ N. The other options stem from miscalculating one or more factors.
A wave travels along a string with tension 100 N and linear density 0.04 kg/m. What is its wave speed?
100 m/s
20 m/s
25 m/s
50 m/s
Wave speed on a string is v = √(T/μ) = √(100/0.04) = 50 m/s. Other values come from incorrect square roots or ratios.
A motor lifts a 20 kg mass at constant speed of 0.5 m/s. What power does the motor deliver? (g=9.8 m/s²)
49 W
20 W
98 W
196 W
Power is force times velocity: mgv = 20×9.8×0.5 = 98 W. Other answers misapply the formula or use wrong factors.
A projectile is launched at 20 m/s at a 30° angle. Neglecting air resistance, what is its horizontal range?
40 m
20 m
35.4 m
17.7 m
Range is v² sin2θ/g = 400×sin60°/9.8 ≈ 35.4 m. Other options ignore the correct trigonometric factors or g.
A block slides down a 30° incline with coefficient of kinetic friction μ=0.2. What is its acceleration?
3.2 m/s²
9.8 m/s²
1.8 m/s²
5.9 m/s²
Acceleration is g(sinθ - μ cosθ) = 9.8(0.5 - 0.2×0.866) ≈ 3.2 m/s². Other results miscalculate the components.
A thin lens has radii of curvature R1=20 cm, R2=-20 cm, and refractive index n=1.5 in air. What is its focal length?
20 cm
10 cm
40 cm
-20 cm
Lens maker's formula gives 1/f = (n - 1)(1/R1 - 1/R2) = 0.5×(5 +5) = 5 m❻¹, so f = 0.2 m (20 cm). Other values come from sign or arithmetic errors.
A Carnot engine operates between 500 K and 300 K. What is its maximum theoretical efficiency?
20%
60%
75%
40%
Carnot efficiency is 1 - Tc/Th = 1 - (300/500) = 0.4 or 40%. Other percentages reflect incorrect ratios.
A square loop of side 0.2 m moves into a uniform magnetic field of 0.5 T at 1 m/s. What is the magnitude of the induced emf while entering?
0.1 V
0.2 V
1 V
0.05 V
The induced emf is Bℓv = 0.5×0.2×1 = 0.1 V. Other values result from incorrect multiplication or forgetting one dimension.
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Learning Outcomes

  1. Analyse the effects of force and motion on objects
  2. Evaluate energy transformations in physical systems
  3. Identify key kinematic variables and equations
  4. Apply principles of waves and optics
  5. Demonstrate understanding of thermodynamic processes
  6. Solve problems involving electricity and magnetism

Cheat Sheet

  1. Newton's Three Laws of Motion - Newton's laws are the ultimate rulebook for every moving object: objects at rest stay at rest, F = ma tells you how pushes translate into acceleration, and every action has an equal and opposite reaction. Mastering these laws helps you predict motion in everything from skateboards to rockets. Read more on Wikipedia
  2. Law of Energy Conservation - Energy never disappears; it just changes form, like potential energy turning into kinetic energy when you drop a ball or chemical energy powering your morning coffee. Understanding this principle is key to solving puzzles involving roller coasters, engines, and even the human body. Read more on Wikipedia
  3. Kinematic Equations - Kinematic equations connect displacement, velocity, acceleration, and time so you can forecast an object's journey, like figuring out how far a car will travel during a speedy acceleration. Equations such as v = u + at and s = ut + ½at² become your secret weapons in solving motion problems. Read more on Wikipedia
  4. Wave Properties - Waves transfer energy through oscillations, and you can characterize them by amplitude, wavelength, and frequency - think of sound waves making music or light waves creating rainbows. Grasping these properties opens doors to understanding everything from guitar strings to fiber”optic internet. Read more on Wikipedia
  5. Laws of Thermodynamics - These laws govern how heat and work interact in any system: energy is conserved, and entropy tends to increase, meaning disorder generally grows over time. They're vital for analyzing engines, refrigerators, and even the fate of the universe! Read more on Wikipedia
  6. Electric Circuits & Ohm's Law - Ohm's Law, V = IR, links voltage, current, and resistance, making it easy to predict how much current will flow through your circuit. This fundamental relationship is your best friend when designing circuits for LEDs, motors, and everything electrical. Read more on Wikipedia
  7. Principles of Magnetism - Magnetism arises from moving charges and can exert forces on other charges, with the right-hand rule guiding the direction of those forces. These concepts are key to understanding electric motors, MRI machines, and even how a compass points north. Read more on Wikipedia
  8. The Doppler Effect - The Doppler Effect describes how wave frequencies change when the source or observer moves - hear a siren's pitch drop as it drives past? That's Doppler in action. It's crucial for radar, astronomy, and medical imaging. Read more on Wikipedia
  9. Momentum & Its Conservation - Momentum (p = mv) measures how hard it is to stop a moving object, and in a closed system the total momentum before and after an event remains the same. This principle lets you analyze collisions from pool balls to car crashes. Read more on Wikipedia
  10. Nature of Light - Light behaves as both waves and particles, giving rise to reflection, refraction, diffraction, and the photoelectric effect. Understanding these dual properties empowers you to solve optics problems and explore cutting-edge physics. Read more on Wikipedia
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