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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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1. Test

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

Which quantity is a vector?

Please select an answer first.

Correct answer: A

The correct answer is Velocity.

  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: Velocity has both magnitude and direction, while mass, temperature, and energy are scalar quantities.
  3. Check units and direction: The correct answer is Velocity.

Velocity has both magnitude and direction, while mass, temperature, and energy are scalar quantities.

2. QuestionMultiple choice

What does acceleration measure?

Please select an answer first.

Correct answer: B

The correct answer is The rate at which velocity changes.

  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: Acceleration is the change in velocity divided by the time interval, so it can involve a change in speed, direction, or both.
  3. Check units and direction: The correct answer is The rate at which velocity changes.

Acceleration is the change in velocity divided by the time interval, so it can involve a change in speed, direction, or both.

3. QuestionMultiple choice

Which relationship expresses Newton's second law?

Please select an answer first.

Correct answer: C

The correct answer is F=maF=ma.

  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 net force on an object equals its mass multiplied by its acceleration.
  3. Check units and direction: The correct answer is F=maF=ma.

The net force on an object equals its mass multiplied by its acceleration.

4. QuestionMultiple choice

For a projectile launched horizontally from a height, what determines its time in the air when air resistance is ignored?

Please select an answer first.

Correct answer: D

The correct answer is Its vertical motion and the launch height.

  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: Horizontal and vertical motions are independent; the time to reach the ground is set by vertical displacement and gravitational acceleration.
  3. Check units and direction: The correct answer is Its vertical motion and the launch height.

Horizontal and vertical motions are independent; the time to reach the ground is set by vertical displacement and gravitational acceleration.

5. QuestionMultiple choice

What is kinetic friction?

Please select an answer first.

Correct answer: A

The correct answer is A force that opposes relative sliding between surfaces.

  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: Kinetic friction acts opposite the direction of sliding and depends on the normal force and coefficient of kinetic friction.
  3. Check units and direction: The correct answer is A force that opposes relative sliding between surfaces.

Kinetic friction acts opposite the direction of sliding and depends on the normal force and coefficient of kinetic friction.

6. QuestionMultiple choice

What is work in mechanics?

Please select an answer first.

Correct answer: B

The correct answer is The component of force along a displacement multiplied by that displacement.

  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: For a constant force, work is (W=Fd\cos\theta), so only the component parallel to displacement transfers mechanical energy.
  3. Check units and direction: The correct answer is The component of force along a displacement multiplied by that displacement.

For a constant force, work is (W=Fd\cos\theta), so only the component parallel to displacement transfers mechanical energy.

7. QuestionMultiple choice

What is power?

Please select an answer first.

Correct answer: C

The correct answer is The rate at which work is done or energy is transferred.

  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: Power measures how quickly energy is transferred and is commonly expressed as work divided by time.
  3. Check units and direction: The correct answer is The rate at which work is done or energy is transferred.

Power measures how quickly energy is transferred and is commonly expressed as work divided by time.

8. QuestionMultiple choice

What does conservation of mechanical energy mean when only conservative forces act?

Please select an answer first.

Correct answer: D

The correct answer is The sum of kinetic and potential energy remains constant.

  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 the absence of nonconservative work, kinetic and potential energy can transform into one another while their total stays constant.
  3. Check units and direction: The correct answer is The sum of kinetic and potential energy remains constant.

In the absence of nonconservative work, kinetic and potential energy can transform into one another while their total stays constant.

9. QuestionMultiple choice

What is the direction of centripetal acceleration in uniform circular motion?

Please select an answer first.

Correct answer: A

The correct answer is Toward the center of the circle.

  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: Centripetal acceleration changes the direction of velocity and points radially inward.
  3. Check units and direction: The correct answer is Toward the center of the circle.

Centripetal acceleration changes the direction of velocity and points radially inward.

10. QuestionMultiple choice

What does angular momentum depend on?

Please select an answer first.

Correct answer: B

The correct answer is The rotational inertia and angular velocity of the system.

  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: For a rigid body rotating about a fixed axis, angular momentum is related to rotational inertia and angular velocity.
  3. Check units and direction: The correct answer is The rotational inertia and angular velocity of the system.

For a rigid body rotating about a fixed axis, angular momentum is related to rotational inertia and angular velocity.

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