What is the role of a medium in the propagation of sound?
A medium provides particles that carry sound vibrations
Sound is a mechanical wave, so it travels only when material particles are available to vibrate and pass energy from layer to layer.
The medium supplies these particles: they oscillate about their mean positions and hand kinetic energy to their neighbours, forming compressions and rarefactions that move outward.
Sound cannot travel through a vacuum, which is why option 3 is wrong; a medium does not obstruct sound (option 2) and cannot convert it into light (option 4).
Hence, a medium provides particles that carry sound vibrations.
Similar Questions
Which of the following changes will most likely reduce the clarity of an echo in a large room?
If two sounds have the same frequency but different amplitudes, what will be different?
Which of the following statements best explains why sound can NOT travel through a vacuum?
Which of the following actions would most effectively reduce reverberation in a large auditorium?
Why can humans NOT hear the sound produced by a bat?
Which of the following statements best explains why striking a bell in a vacuum does NOT produce sound we can hear?
A student beats a large drum and blows a high-pitched plastic whistle at the same time. Which property of the sound waves is the main reason why the whistle sounds so different from the drum?
Which of the following methods is commonly used to measure reverberation in a room?
When a bell rings inside a jar and the air is slowly removed, what happens to the sound?
A student shouts facing a building 220 meters away. If the speed of sound is 330 m/s, how long after the shout will the echo be heard?
Important Questions from Waves
- A high-pitch and a low-pitch sound have ________, respectively.
- The radar used by police to check over-speeding vehicles works on the principle of
- Which one of the following is NOT an electromagnetic wave?
- Wavelength and frequency of a radio wave are 12 m and 25 × 106 Hz respectively. Calculate its velocity.
Ultrasonic pulse echo technique, a non-destructive ultrasonic testing, is employed for any possible flaw detection in a metallic bar of thikness 30 cm. If the arrival times of the ultrasonic pulses are 45 μs and 90 μs respectively, the distance of the flaw from one end of the steel bar at which the ultrasonic pulse initially enters the steel bar, will be:
