Advertisements
Advertisements
प्रश्न
If 20 waves are produced per second, What is the frequency is hertz?
उत्तर
If 20 waves are produced per second, the frequency of sound waves is 20 Hz.
APPEARS IN
संबंधित प्रश्न
Explain how sound is produced by your school bell.
Explain why you can predict the arrival of a train by placing your ear on the rails without seeing it.
Name the physical qantity whose SI unit is 'hertz'.
What is the name of the strings which vibrate in our voice box when we talk?
A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z takes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one :
(a) having on fixed shape and no fixed volume?
(b) having a fixed volume but no fixed shape?
(c) having the same composition as that on the moon?
(d) having a fixed shape and a fixed volume?
Which kind of sound is produced in an earthquake before the main shock wave begins ?
How are different sound notes generated in musical instruments like guitar, which uses strings for sound generation, and flute, which uses blown air for sound generation?
Describe an experiment to show that sound cannot travel through vaccum.
Infrasound can be heard by
Suppose a stick is struck against a frying pan in vacuum. Will the frying pan vibrate? Will we be able to hear the sound? Explain.
