MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
Assertion: When a body moves along a circular path, no work is done by the centripetal force.
|
| A. | Both assertion and reason are true and reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not the correct explanation of assertion |
| C. | Assertion is true but reason is false |
| D. | Both assertion and reason are false |
| Answer» D. Both assertion and reason are false | |
| 2. |
A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is ___________ |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Infinity |
| Answer» D. Infinity | |
| 3. |
A bullet is fired and gets embedded in a block kept on the table. If a table is frictionless, then ___________ |
| A. | Kinetic energy gets conserved |
| B. | Potential energy gets conserved |
| C. | Momentum gets conserved |
| D. | Kinetic energy and potential energy gets conserved |
| Answer» D. Kinetic energy and potential energy gets conserved | |
| 4. |
A simple pendulum hanging freely and at rest is vertical because in that position ___________ |
| A. | Kinetic energy is zero |
| B. | Potential energy is zero |
| C. | Kinetic energy is minimum |
| D. | Potential energy is minimum |
| Answer» E. | |
| 5. |
The kinetic energy acquires by a mass m in travelling distance d, starting from rest, under the action of a constant force is directly proportional to ___________ |
| A. | m |
| B. | m<sup>0</sup> |
| C. | m |
| D. | 1/ m |
| Answer» C. m | |
| 6. |
Two identical balls A and B collide head on elastically. If velocities of A and B, before the collision are +0.5m/s and -0.3m/s respectively, then the velocities after the collision, are ___________ |
| A. | -0.5m/s and +0.3m/s |
| B. | +0.5m/s and +0.3m/s |
| C. | +0.3m/s and -0.5m/s |
| D. | -0.3m/s and +0.5m/s |
| Answer» E. | |
| 7. |
A particle of mass M is moving in a horizontal circle of radius R with uniform speed v. When it moves from one point to a diametrically opposite point, its ___________ |
| A. | Kinetic energy changes by (Mv)<sup>2</sup>/4 |
| B. | Momentum does not change |
| C. | Momentum changes by 2Mv |
| D. | Kinetic energy changes by (Mv)<sup>2</sup> |
| Answer» D. Kinetic energy changes by (Mv)<sup>2</sup> | |
| 8. |
A position dependent force, F = 7-2x+3x2-N acts on a small body of mass 2kg and displaces it from x = 0 to x = 5m. The work done in joules is ___________ |
| A. | 135 |
| B. | 270 |
| C. | 35 |
| D. | 70 |
| Answer» B. 270 | |
| 9. |
A body of mass 5kg is raised vertically to a eight of 10m by a force of 170N. The velocity of the body at this height will be ___________ |
| A. | 37m/s |
| B. | 22m/s |
| C. | 15m/s |
| D. | 9.8m/s |
| Answer» C. 15m/s | |
| 10. |
A gun fires a bullet of mass 50g with a velocity of 30m/s. Because of this, the gun is pushed back with a velocity of 1m/s. The mass of the gun is? |
| A. | 5.5kg |
| B. | 3.5kg |
| C. | 1.5kg |
| D. | 0.5kg |
| Answer» D. 0.5kg | |