MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Standing waves can be produced when two identical waves, having a phase difference of , are travelling in the same direction. True or False? |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
A pipe open at both ends has a fundamental frequency of 2Hz. If the pipe is closed at one end and half filled with water, what will be the fundamental frequency? |
| A. | 0.5Hz |
| B. | 2Hz |
| C. | 4Hz |
| D. | 1Hz |
| Answer» C. 4Hz | |
| 3. |
Consider standing waves in an air column with one end closed. What is a pressure node? |
| A. | Pressure variation is maximum |
| B. | Displacement variation is minimum |
| C. | Same as displacement node |
| D. | Least pressure change |
| Answer» E. | |
| 4. |
A pipe is open at both ends. What should be its length such that it resonates a 10Hz source in the 2nd harmonic? Speed of sound in air = 340m/s. |
| A. | 34m |
| B. | 68m |
| C. | 17m |
| D. | 51m |
| Answer» B. 68m | |
| 5. |
Consider the case of normal modes of vibration for the air column with only one end closed. What is the length of the air column for the fundamental harmonic? |
| A. | /2 |
| B. | |
| C. | 2 |
| D. | /4 |
| Answer» E. | |
| 6. |
If a standing wave is vibrating in the fourth harmonic and the wavelength is , what is the length of the string. |
| A. | 2 |
| B. | |
| C. | 4 |
| D. | /4 |
| Answer» B. | |
| 7. |
What is the minimum distance between a node & an antinode in a standing wave? |
| A. | |
| B. | /2 |
| C. | 2 |
| D. | /4 |
| Answer» E. | |
| 8. |
In a standing wave the amplitude of a particle is fixed, but varies from particle to particle. True or False? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
The equation of a wave is: y = 2sin(4x-3t). What will be the equation of the reflected wave from a free surface? |
| A. | y = 2sin(4x+3t) |
| B. | y = 2sin(3t-4x) |
| C. | y = 2cos(4x+3t) |
| D. | y = 2sin(4x-3t) |
| Answer» B. y = 2sin(3t-4x) | |
| 10. |
If a string wave encounters a completely fixed end, what happens to its phase? |
| A. | Stays the same |
| B. | Changes by |
| C. | Changes by /2 |
| D. | Waves gets destroyed |
| Answer» C. Changes by /2 | |