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प्रश्न
What causes sound?
उत्तर
Sound is caused due to vibrations of a body.
संबंधित प्रश्न
Write true or false for a given statement.
The frequency is measured in hertz.
Select the correct alternative :
Wavelength is measured in
Differentiate between a high pitch sound and a low pitch sound.
How does a man’s voice differ from a woman’s voice ?
What type of wave is represented :
(a) by density-distance graph?
(b) by displacement-distance graph?
Which of the following can produce longitudinal waves as well as transverse waves under different conditions?
In an experiment, Anhad studies sound waves. He sets up a loudspeaker to produce sound as shown below :
Anhad adjusts the signal to the loudspeaker to give a sound of frequency 200 Hz.
(a) What happens to the air in-between Anhad and the loudspeaker ?
(b) Explain how Anhad receives sound in both ears.
Give a scientific reason.
If you were both on the moon, your friend will not be able to hear you call.
What is approximate value of the speed of sound in iron as compared to that in air? Illustrate your answer with a simple experiment.
The smoke from the gun barrel is seen 2 second before the explosion is heard. If the speed of sound in air is 350 ms-1, calculate the distance of observer from the gun.
