Laws of Motion Quiz - CBSE Class 11 Physics

Free practice quiz: Laws of Motion (CBSE Class 11 Physics). 28 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is Newton's first law of motion?

   1. A body at rest will remain at rest unless acted upon by an external force.
   2. Force equals mass times acceleration.
   3. For every action, there is an equal and opposite reaction.
   4. Energy cannot be created or destroyed.
   Show answer

   Answer: A. A body at rest will remain at rest unless acted upon by an external force.

2. If a 5 kg object experiences a force of 10 N, what is its acceleration?

   1. 2 m/s²
   2. 5 m/s²
   3. 10 m/s²
   4. 50 m/s²
   Show answer

   Answer: A. 2 m/s²

3. What principle can be derived from Newton's third law of motion?

   1. Energy is conserved.
   2. For every action, there is an equal and opposite reaction.
   3. Mass and energy are interchangeable.
   4. Mass increases with velocity.
   Show answer

   Answer: B. For every action, there is an equal and opposite reaction.

4. An object experiences a net force and accelerates. If the net force is doubled while the mass remains the same, what happens to the acceleration?

   1. It remains the same.
   2. It doubles.
   3. It halves.
   4. It quadruples.
   Show answer

   Answer: B. It doubles.

5. What happens to the acceleration of an object as its mass increases if the applied force remains constant?

   1. It increases.
   2. It decreases.
   3. It remains the same.
   4. It doubles.
   Show answer

   Answer: B. It decreases.

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