Advertisements
Advertisements
प्रश्न
What are ultrasonics? Can you hear the ultrasonic sound?
एका वाक्यात उत्तर
Advertisements
उत्तर
Sounds of frequency higher than 20,000 Hz are called the ultrasonics. We cannot hear the ultrasonic sounds.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Select the correct alternative :
We can distinguish a shrill sound from a flat sound by its
State two factors on which the velocity of a wave depends.
Complete the following sentences :
Wave velocity = ________________ × wavelength.
What causes sound in air?
What is the ratio of speed of light to speed of sound?
Sound travels in air:
Explain the types of mechanical waves.
The speed of sound in air at 0°C is ______.
______ is an unwanted sound.
Give scientific reasons.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
