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संबंधित प्रश्न
Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?
Write true or false for a given statement.
Loudness depends on frequency.
Fill in the blank.
________ produces a sensation in ears.
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.
Define the term wave velocity. Write its S.I. unit.
Draw displacement-time graph of a wave and show on it the amplitude and time period of wave.
A person fires a gun and other boy at a distance hears the sound of the fire 2.5 s after seeing the flash. If the speed of sound in air is 330 ms-1, find the distance between the boys.
Suppose that a sound wave and a light wave have the same frequency, then which one has a longer wavelength?
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
