MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 9 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. |
Two bodies of mass and 4m have equal kinetic energy. What is the ratio of their momentum? |
| A. | 1:4 |
| B. | 1:2 |
| C. | 1:1 |
| D. | 2:1 |
| Answer» C. 1:1 | |
| 2. |
A body moves a distance of 10m under the action of force F = 10N. If the work done is 25 J, the angle which the force makes with the direction of motion is? |
| A. | 0 |
| B. | 30 |
| C. | 60 |
| D. | None of the mentioned |
| Answer» E. | |
| 3. |
If mass-energy equivalence is taken into account when water is cooled to form ice, the mass of water should ___________ |
| A. | Increase |
| B. | Remain unchanged |
| C. | Decrease |
| D. | First increase and then decrease |
| Answer» B. Remain unchanged | |
| 4. |
A spherical ball of mass 20kg is stationary at the top of a hill of height 100m. It rolls down a smooth surface to the ground, then climbs up another hill of height 30m and finally rolls done to a horizontal base at a height of 20m above the ground. The velocity attained by the ball is ___________ |
| A. | 10m/s |
| B. | 10 30m/s |
| C. | 40m/s |
| D. | 20m/s |
| Answer» D. 20m/s | |
| 5. |
Statement 1: Linear momentum of a system of particles is zero.
|
| A. | 1 does not imply 2 and 2 does not imply 1 |
| B. | 1 implies 2 but 2 does not imply 1 |
| C. | 1 does not imply 2 but 2 implies 1 |
| D. | 1 implies 2 and 2 implies 1 |
| Answer» D. 1 implies 2 and 2 implies 1 | |
| 6. |
A particle of mass 100g is thrown vertically upwards with a speed of 5m/s. The work done by the force of gravity during the time the particle goes up is ___________ |
| A. | 1.25J |
| B. | 0.5J |
| C. | -0.5J |
| D. | -1.25J |
| Answer» E. | |
| 7. |
An athlete in the Olympic game covers a distance of 100m in 10s. His kinetic energy can be estimated in the range? |
| A. | 200J 500J |
| B. | 2 10<sup>5</sup>J 3 10<sup>5</sup>J |
| C. | 20000J 50000J |
| D. | 2000J 5000J |
| Answer» E. | |
| 8. |
A particle is acted upon by a force of a constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that ___________ |
| A. | Its velocity is constant and kinetic energy is constant |
| B. | Its acceleration and velocity is constant |
| C. | Its kinetic energy is constant and it moves in a circular path |
| D. | Its acceleration is constant and it moves in a circular path |
| Answer» D. Its acceleration is constant and it moves in a circular path | |
| 9. |
A body can have energy without momentum. |
| A. | True |
| B. | False |
| Answer» B. False | |