MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
The fundamental frequency of a sonometer wire is n. If the tension is made 3 times and length and diameter are also increased 3 times, the new frequency will be __________ |
| A. | 3n |
| B. | n/3 3 |
| C. | n/3 |
| D. | 3 n |
| Answer» C. n/3 | |
| 2. |
A string is tied on a sonometer, second end is hanging downward through a pulley with tension T. The velocity of the transverse wave produced is proportional to __________ |
| A. | 1/ T |
| B. | T |
| C. | T |
| D. | 1/T |
| Answer» C. T | |
| 3. |
A particle on the trough of a wave at any instant will come to the mean position after a time (T=time period). |
| A. | T/2 |
| B. | T/4 |
| C. | T |
| D. | 2T |
| Answer» C. T | |
| 4. |
A wave equation is y=0.1sin[100 t-kx] and wave velocity is 100m/s, its number is equal to __________ |
| A. | 1/m |
| B. | 2/m |
| C. | /m |
| D. | 2 /m |
| Answer» D. 2 /m | |
| 5. |
y1=4sin ( t+kx), y2=-4cos ( t+kx), the phase difference is __________ |
| A. | /2 |
| B. | 3 /2 |
| C. | |
| D. | Zero |
| Answer» C. | |
| 6. |
If wave y=Acos( t+kx) Is moving along x-axis, the shapes of a pulse at t=0 and t=2s. |
| A. | Are different |
| B. | Are same |
| C. | May not be the same |
| D. | Unpredictable |
| Answer» C. May not be the same | |
| 7. |
The equation of a simple harmonic wave is given by
|
| A. | nWhere x and y are in metre and time is in second. The period of the wave in second will be __________ |
| B. | 0.04 |
| C. | 0.01 |
| D. | 1 |
| E. | 5 |
| Answer» B. 0.04 | |
| 8. |
The quantity which does not change, when sound enters from one medium to another __________ |
| A. | Wavelength |
| B. | Speed |
| C. | Frequency |
| D. | Velocity |
| Answer» D. Velocity | |
| 9. |
The disc of a siren containing 60holes rotates at a constant speed of 360rpm. The emitted sound is in unison with a tuning fork of frequency. |
| A. | 10Hz |
| B. | 360Hz |
| C. | 216Hz |
| D. | 60Hz |
| Answer» C. 216Hz | |
| 10. |
It takes 2 seconds for a sound wave to travel between two fixed points when the day temperature is 10 C. If the temperature rises to 30 C, the sound wave travels between the same fixed parts in __________ |
| A. | 1.9s |
| B. | 2s |
| C. | 2.1s |
| D. | 2.2s |
| Answer» B. 2s | |
| 11. |
The ratio of velocity of sound in hydrogen and oxygen at STP is __________ |
| A. | 16:1 |
| B. | 8:1 |
| C. | 4:1 |
| D. | 2:1 |
| Answer» D. 2:1 | |