Physics
Infrasonic sound waves have a frequency :
- between 20 Hz to 10,000 Hz
- below 20 Hz
- above 20,000 Hz
- between 20 Hz to 20,000 Hz
Related Questions
To detect the obstacles in their path, bats produce:
- Infrasonic waves
- Ultrasonic waves
- Electromagnetic waves
- Radio waves.
With respect to ultrasonic waves, which of the following statements is incorrect ?
- they travel undeviated through a long distance
- they have a speed greater than the speed of sound in a medium
- they are not easily absorbed in a medium
- they can be confined to a narrow beam
The diagram shown below depicts a displacement time graph of particle a wave travelling with speed 20 m/s.
The frequency of the wave is :
- 50 Hz
- 33.3 Hz
- 100 Hz
- 1000 Hz
State two factors on which the speed of a wave travelling in a medium depends.