MCQOPTIONS
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MCQOPTIONS
This section includes 19 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: Sound wave cannot propagate through a vacuum but light canReason: Sound wave cannot be polarised but light can |
| 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. | Both statement and reason are false |
| Answer» C. Statement is true but the reason is false | |
| 2. |
At resonance air column of length 20cm resonates with a tuning fork of frequency 450Hz. Ignoring end correction, the velocity of sound in air is? |
| A. | 720m/s |
| B. | 820m/s |
| C. | 920m/s |
| D. | 360m/s |
| Answer» E. | |
| 3. |
A closed organ pipe and an open pipe of the same length produce four beats per second when sounded together. If the length of the closed pipe is increased, then the number of beats will __________ |
| A. | Increase |
| B. | Decrease |
| C. | Remain the same |
| D. | First decrease then remain the same |
| Answer» B. Decrease | |
| 4. |
A tube closed at one end containing air produces a fundamental note of frequency 512Hz. If the tube is open at both ends, the fundamental frequency will be __________ |
| A. | 256Hz |
| B. | 768Hz |
| C. | 1024Hz |
| D. | 1280Hz |
| Answer» D. 1280Hz | |
| 5. |
An organ pipe closed at one end has a fundamental frequency of 1500Hz. The maximum number of overtones generated by this pipe, which a normal person can hear is? |
| A. | 12 |
| B. | 9 |
| C. | 6 |
| D. | 4 |
| Answer» D. 4 | |
| 6. |
The frequency of a tuning fork is 256. It will not resonate with a fork of frequency? |
| A. | 256 |
| B. | 512 |
| C. | 738 |
| D. | 768 |
| Answer» D. 768 | |
| 7. |
A string in a musical instrument is 50cm long and its fundamental frequency is 800Hz. If a frequency of 1000Hz is to be produced, then required length of string is? |
| A. | 62.5cm |
| B. | 50cm |
| C. | 40cm |
| D. | 37.5cm |
| Answer» D. 37.5cm | |
| 8. |
If vibrations of a string are to be increased by a factor 2, tension in the string must be made ____________ |
| A. | Half |
| B. | Twice |
| C. | Four times |
| D. | Eight times |
| Answer» D. Eight times | |
| 9. |
Standing waves are produced in 10m long stretched string. If the string vibrates in 5 segments and wave velocity is 20m/s, its frequency is? |
| A. | 2Hz |
| B. | 4Hz |
| C. | 5Hz |
| D. | 10Hz |
| Answer» D. 10Hz | |
| 10. |
AT_RESONANCE_AIR_COLUMN_OF_LENGTH_20CM_RESONATES_WITH_A_TUNING_FORK_OF_FREQUENCY_450HZ._IGNORING_END_CORRECTION,_THE_VELOCITY_OF_SOUND_IN_AIR_IS?$ |
| A. | 720m/s |
| B. | 820m/s |
| C. | 920m/s |
| D. | 360m/s |
| Answer» E. | |
| 11. |
Statement:_Sound_wave_cannot_propagate_through_a_vacuum_but_light_can$ |
| A. | |
| 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» C. Both statement and reason are true but the reason is not the correct explanation of the statement | |
| 12. |
A closed organ pipe and an open pipe of the same length produce four beats per second, when sounded together. If the length of the closed pipe is increased, then the number of beats wil? |
| A. | Increase |
| B. | Decrease |
| C. | Remain the same |
| D. | First decrease then remain the same |
| Answer» B. Decrease | |
| 13. |
A tube closed at one end containing air produces a fundamental note of frequency 512Hz. If the tube is open at both ends, the fundamental frequency will be |
| A. | 256Hz |
| B. | 768Hz |
| C. | 1024Hz |
| D. | 1280Hz |
| Answer» D. 1280Hz | |
| 14. |
An organ pipe closed at one end has a fundamental frequency of 1500Hz. The maximum number of overtones generated by this pipe, which a normal person can hear is |
| A. | 12 |
| B. | 9 |
| C. | 6 |
| D. | 4 |
| Answer» D. 4 | |
| 15. |
The frequency of a tuning fork is 256. It will not resonate with a fork of frequency |
| A. | 256 |
| B. | 512 |
| C. | 738 |
| D. | 768 |
| Answer» D. 768 | |
| 16. |
A string in a musical instrument is 50cm long and its fundamental frequency is 800Hz. If a frequency of 1000Hz is to be produced, then required length of string is |
| A. | 62.5cm |
| B. | 50cm |
| C. | 40cm |
| D. | 37.5cm |
| Answer» D. 37.5cm | |
| 17. |
The tension in the piano wire is 10N. What should be the tension in the wire to produce a note of double the frequency? |
| A. | 5N |
| B. | 20N |
| C. | 40N |
| D. | 80N |
| Answer» D. 80N | |
| 18. |
If vibrations of a string are to be increased by a factor 2, tension in the string must be made |
| A. | Half |
| B. | Twice |
| C. | Four times |
| D. | Eight times |
| Answer» D. Eight times | |
| 19. |
Standing waves are produced in 10m long stretched string. If the string vibrates in 5 segments and wave velocity is 20m/s, its frequency is |
| A. | 2Hz |
| B. | 4Hz |
| C. | 5Hz |
| D. | 10Hz |
| Answer» D. 10Hz | |