| 1 |
In vibrating string, the points where the amplitude is maximum are called. |
- A. Nodes
- B. Antinodes
- C. Troughs
- D. Crests
|
| 2 |
When sound waves enter in different medium, the quantity that remains unchanged is. |
- A. Intensity
- B. Speed
- C. Frequency
- D. Wave length
|
| 3 |
When ever the path difference between the waves is integral multiple of half the wavelength, interference will be |
- A. Constructive
- B. Destructive
- C. (-)ve
- D. (+) ve
|
| 4 |
Speed of sound in copper is |
- A. 38000 ms-1
- B. 3600 ms-1
- C. 3500 ms-1
- D. 3400 ms-1
|
| 5 |
The speed of sound in air does not depend upon |
- A. Temperature
- B. Pressure
- C. Density
- D. Medium
|
| 6 |
the velocity of sound at 0 <sup>o</sup>C is 332 ms-1, the velocity of sound at 10 <sup>o</sup>C will be |
- A. 337.1 ms-1
- B. 338.1 ,ms-1
- C. 342.1 ms-1
- D. 328.1 ms-1
|
| 7 |
In sonar we use |
- A. Sound waves
- B. Ultrasound waves
- C. Microwaves
- D. Radio waves
|
| 8 |
The waves used in radar speed trap are |
- A. <u>Longitudinal</u>
- B. Sound wave
- C. Micro waves
- D. Matter waves
|
| 9 |
The distance covered by wave in 1 sec is |
- A. wavelength
- B. Wave number
- C. Wave speed
- D. Frequency
|
| 10 |
The speed \velocity of sound is greatest in. |
- A. Air
- B. Steel
- C. Ammonia
- D. Water
|
