MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Work done by a force on a body is an example of ______ |
| A. | Mechanical work |
| B. | Electrical work |
| C. | Magnetic work |
| D. | Thermodynamic work |
| Answer» B. Electrical work | |
| 2. |
A force of 10 N creates a displacement of 2 m but the work done on the body throughout its motion is equal to 70 J. What possibly can be the reason or this? |
| A. | There are multiple forces action on the body |
| B. | The body is at rest |
| C. | The force is not uniform |
| D. | The displacement is harmonic |
| Answer» B. The body is at rest | |
| 3. |
A block of mass 10 Kg accelerates from rest to a velocity of 20 m/s in 5s under the influence of an external force. What is the work done by the external force? |
| A. | 2000 J |
| B. | -2000 J |
| C. | 20000 J |
| D. | -20000 J |
| Answer» B. -2000 J | |
| 4. |
A body of mass 40 Kg covers a distance of 50 m in 5s starting from rest under the influence of a force. What is the work done by the force on the body? |
| A. | 8000 J |
| B. | -8000 J |
| C. | 20000 J |
| D. | 800 J |
| Answer» B. -8000 J | |
| 5. |
The work done on a body of mass 5 Kg is 70 J. What is the magnitude of the force applied if the total displacement it covered is 7 m. |
| A. | 10 N |
| B. | -10 N |
| C. | 20 N |
| D. | 70 N |
| Answer» B. -10 N | |
| 6. |
A force of 40 N acts on body of mass 5 Kg which is initially at rest. What is the amount of work done in the first 10 s? |
| A. | 16000 J |
| B. | -16000 J |
| C. | 400 J |
| D. | -400 J |
| Answer» B. -16000 J | |
| 7. |
Work being a scalar quantity sometimes has negative and positive signs. What does the sign suggest? |
| A. | The direction of work |
| B. | Relative directions of force and displacement |
| C. | The direction of force |
| D. | The direction of displacement |
| Answer» C. The direction of force | |
| 8. |
A force of 40 N acts on body of mass 5 Kg. What is the amount of work done if the total displacement is 2 m and is in the direction of the force applied? |
| A. | 80 J |
| B. | -80 J |
| C. | 40 J |
| D. | 16 J |
| Answer» B. -80 J | |
| 9. |
Work is a _______ |
| A. | Scalar quantity |
| B. | Vector quantity |
| C. | Foreign quantity |
| D. | Magnitude less quantity |
| Answer» B. Vector quantity | |
| 10. |
Work done in a system is ___ |
| A. | The measure of energy change |
| B. | The measure of useful work |
| C. | The measure of displacement |
| D. | The measure of force |
| Answer» B. The measure of useful work | |