| 1 |
The speed of sound in ari at 0 <sup>o</sup>C is 332 ms-1, Then the speed at 40 <sup>o</sup>C will be |
- A. 372 ms-1
- B. 356 ms-1
- C. 346 ms-1
- D. 332 ms-1
|
| 2 |
Speed of sound in aluminum at 20 <sup>o</sup>C is. |
- A. 3600 m/s
- B. 5100 m/s
- C. 5130 m/s
- D. 3500 m/s
|
| 3 |
Longitudinal waves do not exhibit |
- A. Reflection
- B. Refraction
- C. Polarization
- D. Diffraction
|
| 4 |
The speed of sound in air does not depend upon |
- A. Temperature
- B. Pressure
- C. Density
- D. Medium
|
| 5 |
The portion of the wave above mean level is called. |
- A. Node
- B. Antinode
- C. Crest
- D. Trough
|
| 6 |
If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is. |
- A. 200 m
- B. 2 m
- C. 1 m
- D. 0.5 m
|
| 7 |
Half wavelength corresponds to |
- A. 0 <sup>o</sup>
- B. 90 <sup>o</sup>
- C. 180 <sup>o</sup>
- D. 360 <sup>o</sup>
|
| 8 |
In order to produce beats, the two sound waves should have. |
- A. The same amplitude
- B. Slightly different amplitude
- C. The same frequency
- D. slightly different frequencies.
|
| 9 |
A bat finding its correct location by sending |
- A. Matter waves
- B. Ultrasonic waves
- C. Infrasonic waves
- D. electromagnetic waves
|
| 10 |
Speed of sound in copper is |
- A. 38000 ms-1
- B. 3600 ms-1
- C. 3500 ms-1
- D. 3400 ms-1
|
