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प्रश्न
What is the SI unit of frequency?
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उत्तर
The SI unit of frequency is hertz (Hz).
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संबंधित प्रश्न
Fill in the blank.
Sound is produced when a body ______.
Name the physical qantity whose SI unit is 'hertz'.
Name four ways in which sound can be produced.
If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?
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 ?
Different sound notes have different ______.
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?
Write the answer in your own words.
What is meant by vibration?
The substance through which sound is transmitted is called ______.
