MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A variable mass body with an initial mass of 10 kg is moving with a velocity of 7 m/s initially, after some time the velocity increases to 14 m/s, what is the new mass if the body is moving in the absence of any external force? |
| A. | 2.5 Kg |
| B. | 5 Kg |
| C. | 7.5 Kg |
| D. | 10 Kg |
| Answer» C. 7.5 Kg | |
| 2. |
When a body collides with a wall or the ground, what assumption do we make? |
| A. | The mass of the body is not negligible |
| B. | The body is stationary |
| C. | The mass of the body is negligible as compared to the mass of the wall or the ground |
| D. | The body is perfect |
| Answer» D. The body is perfect | |
| 3. |
Two bodies are accelerating towards each other. After sometime they collide. Which one of the following statements is true about the system? |
| A. | The total momentum remains conserved about the instant of collision |
| B. | The total momentum remains conserved during collision |
| C. | The total momentum does not remain conserved |
| D. | The total momentum remains conserved |
| Answer» B. The total momentum remains conserved during collision | |
| 4. |
What is the plural of the word momentum ? |
| A. | Momenta |
| B. | Momentums |
| C. | Moments |
| D. | Momentuma |
| Answer» B. Momentums | |
| 5. |
Two bodies of masses 2 Kg and 7 Kg are moving with velocities of 2 m/s and 7 m/s respectively. What is the total momentum of the system in Kg-m/s? |
| A. | 50 |
| B. | 53 |
| C. | 28 |
| D. | 0 |
| Answer» C. 28 | |
| 6. |
A variable mass body with an initial mass of 5 kg is moving with a velocity of 5 m/s initially, after some time the velocity increases to 10 m/s, what is the new mass if the body is moving in the absence of any external force? |
| A. | 2.5 Kg |
| B. | 5 Kg |
| C. | 7.5 Kg |
| D. | 10 Kg |
| Answer» B. 5 Kg | |
| 7. |
A ball is moving with a constant velocity. After some time, it collides with a wall. Which one of the following remains conserved except momentum? |
| A. | Energy |
| B. | Displacement |
| C. | Power |
| D. | Force |
| Answer» B. Displacement | |
| 8. |
Two bodies moving with constant velocities collide with each other. Which of the following quantities remain conserved? |
| A. | Momentum |
| B. | Speed |
| C. | Force |
| D. | Velocity |
| Answer» B. Speed | |