MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A ball is thrown vertically upwards with a velocity of 20m/s. At what height, will its kinetic energy be half its original value? |
| A. | 10.20m |
| B. | 10m |
| C. | 15m |
| D. | 5m |
| Answer» B. 10m | |
| 2. |
How high must the body be lifted to gain an amount of potential energy equal to the kinetic energy it has when moving at a speed of 20m/s? g=9.8m/s2 |
| A. | 20m |
| B. | 20.0m |
| C. | 202m |
| D. | 22m |
| Answer» C. 202m | |
| 3. |
Calculate the velocity of the bob of a simple pendulum at its mean position if it is able to rise to a vertical height of 10cm. Take g = 9.8m/s2 |
| A. | 5m/s |
| B. | 1.5m/s |
| C. | 14m/s |
| D. | 1.4m/s |
| Answer» E. | |
| 4. |
A bullet of mass 20g is found to pass two points 30m apart in a time interval of 4s. Calculate the kinetic energy of the bullet if it moves with constant speed. |
| A. | 2.5J |
| B. | 5J |
| C. | 0.562J |
| D. | 2J |
| Answer» D. 2J | |
| 5. |
The momentum of a body of mass 5kg is 500kgm/s. Find its kinetic energy? |
| A. | 2 10<sup>5</sup> J |
| B. | 2.5 10<sup>4</sup> J |
| C. | 2.5 10<sup>5</sup> J |
| D. | 2.5J |
| Answer» C. 2.5 10<sup>5</sup> J | |
| 6. |
When force and displacement are in the same direction, the kinetic energy of the body ___________ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | Becomes zero |
| Answer» B. Decreases | |