| 1 |
When two waves having same frequency traveling in same direction combine, phenomenon is called |
- A. Wave motion
- B. Combination of waves
- C. Interference
- D. Diffraction
|
| 2 |
the louder the sound, the greater will be its. |
- A. Speed
- B. Frequency
- C. Amplitude
- D. Wave length
|
| 3 |
Frequency range of hearing of cats is. |
- A. 20-20000 Hz
- B. 10- 10000 Hz
- C. 60-20000 Hz
- D. 60-70000 Hz
|
| 4 |
If 30 waves per second pass through a medium at a speed 30 ms-1, then the wavelength is. |
- A. 30 m
- B. 15 m
- C. 1 m
- D. 28 m
|
| 5 |
With increase of temperature, speed of sound. |
- A. Remains constant
- B. Becomes zero
- C. Decreases
- D. Increases
|
| 6 |
An oscillating mass-spring system produces |
- A. Sound waves
- B. Electromagnetic waves
- C. Light waves
- D. Periodic waves
|
| 7 |
The speed of sound increases with the increase of in |
- A. Pressure
- B. Volume
- C. Temperature
- D. Density
|
| 8 |
In transverse waves the particles of medium vibrate |
- A. Along the direction of wave
- B. Opposite to direction of wave
- C. Perpendicular to direction of wave
- D. Slowly
|
| 9 |
the example of mechanical waves is |
- A. Water waves
- B. Infrared waves
- C. Radio waves
- D. Ultraviolet waves
|
| 10 |
If the pressure of a gas is doubled, then speed of sound is. |
- A. Doubled
- B. Become half
- C. Not affected
- D. Increases by four times
|