MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a solid sphere of mass 200g and radius 20cm is rotating with an angular velocity of 5 rad s-1, its rotational kinetic energy is _____ |
| A. | 0.06J |
| B. | 0.04J |
| C. | 0.03J |
| D. | 0.004J |
| Answer» C. 0.03J | |
| 2. |
A particle of mass 200g is thrown vertically upwards with a speed of 10ms-1, the work done by force of gravity while the particle goes up is given by _____ |
| A. | 0.5J |
| B. | 5J |
| C. | 10J |
| D. | 15J |
| Answer» D. 15J | |
| 3. |
What work must be done to stop a bullet moving with a velocity of 2000ms-1 and having a mass of 50g? |
| A. | 105J |
| B. | 106J |
| C. | 104J |
| D. | 107J |
| Answer» B. 106J | |
| 4. |
At the highest point of a projectile’s trajectory, the kinetic energy is minimum and potential energy is maximum. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
A particle of mass 1kg is moving with a velocity of 20ms-1 then its kinetic energy is ____ |
| A. | 200 J |
| B. | 200 kgm2s-1 |
| C. | 200 kgm-1s-2 |
| D. | 200 kgm-1s-1 |
| Answer» B. 200 kgm2s-1 | |
| 6. |
A body is projected up vertically with a velocity of 60 m/s. What percentage of its initial kinetic energy is converted into potential energy after 3 seconds? (Take g = 10 m/s2) |
| A. | 25 % |
| B. | 50% |
| C. | 75% |
| D. | 100% |
| Answer» D. 100% | |
| 7. |
What kinetic energy should be imparted to an object of mass “m” to raise it to a height of 1000 meters? (Take g = 10 m/s2) |
| A. | 10m J |
| B. | 100m J |
| C. | 1000m J |
| D. | 10000m J |
| Answer» E. | |
| 8. |
The kinetic energy of a man is half that of a boy whose mass is half that of the man. When the man speeds up by 5 m/s, his kinetic energy doubles that of the boy’s kinetic energy. What is the initial velocity of the man? |
| A. | 5 m/s |
| B. | 10 m/s |
| C. | 15 m/s |
| D. | 20 m/s |
| Answer» B. 10 m/s | |
| 9. |
The kinetic energy of a body is ‘K’. If one-fourth of its mass is removed and velocity is doubled, the new kinetic energy will be _____ |
| A. | K |
| B. | 3K |
| C. | 4K |
| D. | 9K/4 |
| Answer» C. 4K | |
| 10. |
For an object of mass “m” in motion, its kinetic energy depends on the modulus of its acceleration vector. |
| A. | True |
| B. | False |
| Answer» C. | |