MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 18 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. |
Statement: The amplitude of an oscillating pendulum decreases gradually with time.Reason: The frequency of the pendulum decreases with time. |
| A. | Both statement and reason are true and the reason is the correct explanation of the statement |
| B. | Both statement and reason are true but the reason is not the correct explanation of the statement |
| C. | Statement is true, but the reason is false |
| D. | Statement and reason are false |
| Answer» D. Statement and reason are false | |
| 2. |
A horizontal platform with an object placed on it is executing simple harmonic motion in the vertical direction. The amplitude of oscillation is 3.92×10-3 m. What must be the least period of these oscillations, so that the object is not detached from the platform? |
| A. | 0.1256s |
| B. | 0.1356s |
| C. | 0.1456s |
| D. | 0.1556s |
| Answer» B. 0.1356s | |
| 3. |
The phase difference between the instantaneous velocity and acceleration of a particle executing simple harmonic motion is ___________ |
| A. | 0.5π |
| B. | π |
| C. | 0.707 π |
| D. | 0.61 π |
| Answer» B. π | |
| 4. |
Natural length of spring is 60 cm and its spring constant is 4000 N/m. A mass of 20 kg is hung from it. The extension produced in the spring (take g=9.8m/s2) is? |
| A. | 4.9cm |
| B. | 0.49cm |
| C. | 9.4cm |
| D. | 0.94cm |
| Answer» B. 0.49cm | |
| 5. |
If the frequency of oscillation of a particle doing simple harmonic motion is n, the frequency of kinetic energy is? |
| A. | 2n |
| B. | n |
| C. | n/2 |
| D. | 2/n |
| Answer» D. 2/n | |
| 6. |
The maximum velocity of a particle, executing simple harmonic motion with amplitude 7mm, is 4.4m/s. The period of oscillation is? |
| A. | 0.01s |
| B. | 0.1s |
| C. | 10s |
| D. | 100s |
| Answer» B. 0.1s | |
| 7. |
The displacement of an object attached to a spring and executing simple harmonic motion is given by x = 2×10-2 cosπt(in m). The time at which the maximum speed first occurs is? |
| A. | 0.5s |
| B. | 0.75s |
| C. | 0.125s |
| D. | 0.25s |
| Answer» B. 0.75s | |
| 8. |
A simple pendulum of length l and with a bob whose mass is m is moving along a circular arc of angle θ in a vertical plane. A sphere of mass m is placed at the end of the circle. What momentum will be given to the sphere by the moving bob? |
| A. | Infinity |
| B. | Constant |
| C. | Unity |
| D. | Zero |
| Answer» E. | |
| 9. |
A_HORIZONTAL_PLATFORM_WITH_AN_OBJECT_PLACED_ON_IT_IS_EXECUTING_SIMPLE_HARMONIC_MOTION_IN_THE_VERTICAL_DIRECTION._THE_AMPLITUDE_OF_OSCILLATION_IS_3.92‚ÄÖ√†√∂‚Àւ•10-3_M._WHAT_MUST_BE_THE_LEAST_PERIOD_OF_THESE_OSCILLATIONS,_SO_THAT_THE_OBJECT_IS_NOT_DETACHED_FROM_THE_PLATFORM??$# |
| A. | 0.1256s |
| B. | 0.1356s |
| C. | 0.1456s |
| D. | 0.1556s |
| Answer» B. 0.1356s | |
| 10. |
Statement: The amplitude of an oscillating pendulum decreases gradually with time |
| A. | None of these |
| B. | Both statement and reason are true and the reason is the correct explanation of the statement |
| C. | Both statement and reason are true but the reason is not the correct explanation of the statement |
| Answer» D. | |
| 11. |
The phase difference between the instantaneous velocity and acceleration of a particle executing simple harmonic motion i? |
| A. | 0.5π |
| B. | π |
| C. | 0.707 π |
| D. | 0.61 π |
| Answer» B. ‚âà√¨‚àö√ë | |
| 12. |
Natural length of spring is 60 cm and its spring constant is 4000 N/m. A mass of 20 kg is hung from it. The extension produced in the spring (take g=9.8m/s2) is |
| A. | 4.9cm |
| B. | 0.49cm |
| C. | 9.4cm |
| D. | 0.94cm |
| Answer» B. 0.49cm | |
| 13. |
If the frequency of oscillation of a particle doing simple harmonic motion is n, the frequency of kinetic energy is |
| A. | 2n |
| B. | n |
| C. | n/2 |
| D. | 2/n |
| Answer» D. 2/n | |
| 14. |
The maximum velocity of a particle, executing simple harmonic motion with amplitude 7mm, is 4.4m/s. The period of oscillation is |
| A. | 0.01s |
| B. | 0.1s |
| C. | 10s |
| D. | 100s |
| Answer» B. 0.1s | |
| 15. |
The displacement of an object attached to a spring and executing simple harmonic motion is given by |
| A. | |
| B. | |
| C. | 0.5s |
| Answer» B. | |
| 16. |
When a 2 kg body is suspended by a spring, the spring is stretched. If the body is pulled down slightly and released, it oscillates up and down. What force is applied on the body by the spring when it passes through the mean position? |
| A. | Force equal to the gravity |
| B. | Force equal to the pull |
| C. | Conservative force |
| D. | Force equal to the weight of the body |
| Answer» E. | |
| 17. |
A simple pendulum of length l and with a bob whose mass is m is moving along a circular arc of angle θ in a vertical plane. A sphere of mass m is placed at the end of the circle. What momentum will be given to the sphere by the moving bob?$ |
| A. | Infinity |
| B. | Constant |
| C. | Unity |
| D. | Zero |
| Answer» E. | |
| 18. |
A motion can be periodic and not oscillatory. |
| A. | True |
| B. | False |
| Answer» B. False | |