Advertisements
Advertisements
प्रश्न
What are the ultrasonic waves?
एका वाक्यात उत्तर
Advertisements
उत्तर
The sound wave of frequency higher than 20,000 Hz are called ultrasonic waves.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Why are musical instruments provided with more than one string ?
What is sound? What type of waves are sound wave in air?
The flash of a gun is seen by a man 3 seconds before the sound is heard. Calculate the distance of the gun from the man (Speed of sound in air is 332 m/s).
The longitudinal waves travel in a coiled spring at a rate of 4 m/s. The distance between two consecutive compressions is 20 cm. Find :
(i) Wavelength of the wave (ii) Frequency of the wave
Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros ?
At 20°C, the minimum distance of a person from a sound reflecting surface to hear an echo is :
What are characteristics of a wave motion?
Define wavelength.
Match the following
| 1. | Infrasonic | (a) | Compressions |
| 2. | Echo | (b) | 22 kHz |
| 3. | Ultrasonic | (c) | 10 Hz |
| 4. | High-pressure region | (d) | Ultrasonography |
What is a wave?
