MCQOPTIONS
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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. |
When a body moves with a constant speed along a circle ___________ |
| A. | No work is done on it |
| B. | No acceleration is produced in it |
| C. | Its velocity remains constant |
| D. | No force acts on it |
| Answer» B. No acceleration is produced in it | |
| 2. |
Assertion: In and elastic collision of two billiard balls, the total kinetic energy is conserved during the short time of collision of balls.
|
| A. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not the correct explanation of the assertion |
| C. | Both assertion and reason are false |
| D. | Assertion is true but the reason is false |
| Answer» D. Assertion is true but the reason is false | |
| 3. |
In elastic collision, 100% energy transfer takes place when ___________ |
| A. | m<sub>1</sub>=2m<sub>2</sub> |
| B. | m<sub>1</sub> is greater than m<sub>2</sub> |
| C. | m<sub>1</sub> is lesser than m<sub>2</sub> |
| D. | m<sub>1</sub>=m<sub>2</sub> |
| Answer» E. | |
| 4. |
Two particles are seen to collide and move jointly together after the collision. During such a collision, for the total system ___________ |
| A. | Neither the mechanical energy nor the linear momentum is conserved |
| B. | Mechanical energy is conserved, but not the linear momentum |
| C. | Both the mechanical energy and the linear momentum are conserved |
| D. | Linear momentum is conserved, but not the mechanical energy |
| Answer» E. | |
| 5. |
If the water falls from a dam into a turbine wheel 19.6m below, then the velocity of water at the turbine is? (g=9.8m/s) |
| A. | 9.8m/s |
| B. | 19.6m/s |
| C. | 39.2m/s |
| D. | 98m/s |
| Answer» C. 39.2m/s | |
| 6. |
The decrease in potential energy of a ball of mass 20kg, which falls from a height of 50cm, is? |
| A. | 968J |
| B. | 98J |
| C. | 1980J |
| D. | 450J |
| Answer» C. 1980J | |
| 7. |
The kinetic energy of a body becomes four times of its initial value, then new momentum will ___________ |
| A. | Become twice its initial value |
| B. | Become thrice its initial value |
| C. | Become four times its initial value |
| D. | Remains constant |
| Answer» B. Become thrice its initial value | |
| 8. |
Kinetic energy with any reference must be ___________ |
| A. | Zero |
| B. | Positive |
| C. | Negative |
| D. | Either negative or positive |
| Answer» C. Negative | |
| 9. |
A boy carrying a box on his head is walking on a level load from one place to another on a straight road is doing no work. The statement is? |
| A. | Correct |
| B. | Incorrect |
| C. | Partly correct |
| D. | Insufficient data |
| Answer» B. Incorrect | |