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Physics Practice Tests

These Grade 12 Science practice tests develop Physics skills through mechanics, forces, energy, momentum, oscillations, waves, thermodynamics, electricity, magnetism, optics, modern physics, and experimental reasoning.

Skills covered

  • Analyzing vectors, kinematics, Newton's laws, friction, work, power, circular motion, and angular momentum
  • Applying conservation of energy, momentum, impulse, collisions, oscillations, wave relationships, and thermodynamic laws
  • Using Coulomb's law, electric fields and potential, circuits, capacitors, Kirchhoff's rules, magnetic force, and electromagnetic induction
  • Explaining reflection, refraction, lenses, total internal reflection, polarization, photoelectric effect, matter waves, spectra, and radioactive half-life
  • Interpreting graphs, uncertainty, dimensions, semiconductors, relativity, orbital motion, and laboratory safety

How to use these practice tests

Start by drawing a diagram or identifying the system. Write the relevant equation, keep units consistent, and decide whether the question asks for a scalar, vector, energy transfer, field, or rate. Use the explanations to review both the calculation and the physical meaning.

For more Grade 12 Science practice, return to the Grade 12 Science category.

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Grade 12 Physics Practice Tests

Practice Grade 12 Science questions about motion, forces, energy, momentum, waves, thermodynamics, electricity, magnetism, optics, modern physics, and experimental reasoning.

Choose the best answer. Define the system, track units and directions, identify the governing law, and check whether the result is physically reasonable.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is impulse equal to?

Please select an answer first.

Correct answer: A

The correct answer is The change in momentum.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: Impulse is the integral of net force over time and equals the change in linear momentum.
  3. Check units and direction: The correct answer is The change in momentum.

Impulse is the integral of net force over time and equals the change in linear momentum.

2. QuestionMultiple choice

In an isolated elastic collision, which quantities are conserved?

Please select an answer first.

Correct answer: B

The correct answer is Momentum and kinetic energy.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: An ideal elastic collision conserves total momentum and total kinetic energy.
  3. Check units and direction: The correct answer is Momentum and kinetic energy.

An ideal elastic collision conserves total momentum and total kinetic energy.

3. QuestionMultiple choice

What is the center of mass of a system?

Please select an answer first.

Correct answer: C

The correct answer is The weighted average position of the system's mass.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: The center of mass is determined by the positions of the component masses and need not be inside the material.
  3. Check units and direction: The correct answer is The weighted average position of the system's mass.

The center of mass is determined by the positions of the component masses and need not be inside the material.

4. QuestionMultiple choice

What is characteristic of simple harmonic motion?

Please select an answer first.

Correct answer: D

The correct answer is The restoring force is proportional to displacement and points toward equilibrium.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: In simple harmonic motion, the restoring force has the form (F=-kx), producing oscillation about equilibrium.
  3. Check units and direction: The correct answer is The restoring force is proportional to displacement and points toward equilibrium.

In simple harmonic motion, the restoring force has the form (F=-kx), producing oscillation about equilibrium.

5. QuestionMultiple choice

What relationship connects wave speed, frequency, and wavelength?

Please select an answer first.

Correct answer: A

The correct answer is v=fλv=f\lambda.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: Wave speed equals frequency multiplied by wavelength.
  3. Check units and direction: The correct answer is v=fλv=f\lambda.

Wave speed equals frequency multiplied by wavelength.

6. QuestionMultiple choice

What is a standing wave?

Please select an answer first.

Correct answer: B

The correct answer is A wave pattern with fixed nodes and antinodes formed by interference.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: Standing waves result from superposition of waves traveling in opposite directions and have locations of zero and maximum displacement.
  3. Check units and direction: The correct answer is A wave pattern with fixed nodes and antinodes formed by interference.

Standing waves result from superposition of waves traveling in opposite directions and have locations of zero and maximum displacement.

7. QuestionMultiple choice

What is the Doppler effect?

Please select an answer first.

Correct answer: C

The correct answer is A change in observed frequency caused by relative motion between source and observer.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: Relative motion changes the rate at which wave crests reach the observer, altering the measured frequency.
  3. Check units and direction: The correct answer is A change in observed frequency caused by relative motion between source and observer.

Relative motion changes the rate at which wave crests reach the observer, altering the measured frequency.

8. QuestionMultiple choice

What does the first law of thermodynamics express?

Please select an answer first.

Correct answer: D

The correct answer is Energy is conserved as heat, work, and changes in internal energy.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: The first law can be written as (\Delta U=Q-W) when (W) is work done by the system, with sign conventions stated clearly.
  3. Check units and direction: The correct answer is Energy is conserved as heat, work, and changes in internal energy.

The first law can be written as (\Delta U=Q-W) when (W) is work done by the system, with sign conventions stated clearly.

9. QuestionMultiple choice

What does entropy describe in a thermodynamic system?

Please select an answer first.

Correct answer: A

The correct answer is The dispersal of energy and the number of accessible microscopic arrangements.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: Entropy is related to the number of possible microstates and the spreading of energy through a system.
  3. Check units and direction: The correct answer is The dispersal of energy and the number of accessible microscopic arrangements.

Entropy is related to the number of possible microstates and the spreading of energy through a system.

10. QuestionMultiple choice

For an ideal gas, which equation relates pressure, volume, amount, and temperature?

Please select an answer first.

Correct answer: B

The correct answer is PV=nRTPV=nRT.

  1. Identify the physics concept: Determine whether the question concerns motion, forces, energy, momentum, waves, electricity, magnetism, optics, modern physics, or experimental reasoning.
  2. Apply the physical principle: The ideal gas law connects macroscopic gas variables through the gas constant (R).
  3. Check units and direction: The correct answer is PV=nRTPV=nRT.

The ideal gas law connects macroscopic gas variables through the gas constant (R).

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