MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Two bodies collide perfectly inelastically, they will ______ |
| A. | Move together |
| B. | Move in opposite directions |
| C. | Move separately |
| D. | Remain stationary |
| Answer» B. Move in opposite directions | |
| 2. |
When e < 1, the kinetic energy in the collision is ____ |
| A. | Lost |
| B. | Gained |
| C. | Gained exponentially |
| D. | Unchanged |
| Answer» B. Gained | |
| 3. |
A ball traveling with some velocity v hits another ball elastically which is stationary. What will happen to the system? |
| A. | The stationary ball will start moving with a velocity v and the moving ball will come at rest |
| B. | The stationary ball remains at rest and the moving ball starts moving in opposite direction |
| C. | Both the balls become stationary |
| D. | Both the balls start moving |
| Answer» B. The stationary ball remains at rest and the moving ball starts moving in opposite direction | |
| 4. |
When two same masses travelling in opposite directions with different velocities collide perfectly elastically, their velocities ______ |
| A. | Exchange |
| B. | Remain unchanged |
| C. | Increase |
| D. | Decrease |
| Answer» B. Remain unchanged | |
| 5. |
A car of mass 1ton is moving with a velocity of 25 m/s towards left. A truck of mass 5 ton is moving towards left with a velocity of 3 m/s. If the collision is perfectly elastic, what is the final velocity of the truck in m/s? |
| A. | 11 |
| B. | 25 |
| C. | 3 |
| D. | 10 |
| Answer» D. 10 | |
| 6. |
A ball of mass 100 g is moving with a velocity of 3 m/s towards east. A cube of mass 200 gram is moving towards west with a velocity of 7 m/s. If the collision is perfectly elastic, what is the final velocity of the ball in m/s? |
| A. | 7 |
| B. | 5 |
| C. | 31/3 |
| D. | 11/3 |
| Answer» D. 11/3 | |
| 7. |
A ball of mass 100 g is moving with a velocity of 3 m/s towards east. A cube of mass 200 gram is moving towards west with a velocity of 7 m/s. If the collision is perfectly elastic, what is the final velocity of the cube in m/s? |
| A. | 7 |
| B. | 5 |
| C. | 3 |
| D. | 11 |
| Answer» B. 5 | |
| 8. |
A ball of mass 100 g is moving with a velocity of 3 m/s towards east. A cube of mass 200 gram is moving towards west with a velocity of 7 m/s. If the collision is perfectly elastic, what is the magnitude of the final momentum of the system in Kg-m/s? |
| A. | 1700 |
| B. | 1500 |
| C. | 1300 |
| D. | 1100 |
| Answer» E. | |
| 9. |
For what value of e is a collision partially elastic? |
| A. | 0 < e < 1 |
| B. | 1 |
| C. | e > 1 |
| D. | 0 |
| Answer» B. 1 | |
| 10. |
For what value of e is a collision perfectly inelastic? |
| A. | 1 |
| B. | 2 |
| C. | 0.5 |
| D. | 0 |
| Answer» E. | |
| 11. |
For what value of e is a collision perfectly elastic? |
| A. | 1 |
| B. | 2 |
| C. | 0.5 |
| D. | 0 |
| Answer» B. 2 | |
| 12. |
What is the coefficient of restitution (e)? |
| A. | Ratio of final to initial relative velocities |
| B. | Ratio of initial to final relative velocities |
| C. | Ratio of final to initial velocity of a body |
| D. | Product of initial to final relative velocities |
| E. | ?a) Ratio of final to initial relative velocitiesb) Ratio of initial to final relative velocitiesc) Ratio of final to initial velocity of a bodyd) Product of initial to final relative velocities |
| Answer» B. Ratio of initial to final relative velocities | |