Advertisements
Advertisements
प्रश्न
Note is a sound
विकल्प
of a mixture of several frequencies
of a mixture of two frequencies only
of a single frequency
always unpleasant to listen
Advertisements
उत्तर
Note is a sound of a mixture of several frequencies
संबंधित प्रश्न
What are wavelength, frequency, time period and amplitude of a sound wave?
Write the audible range of frequency for the normal human ear.
Describe an experiment to show the production of sound having low and high pitch.
What are longitudinal waves and transverse waves? Explain with the help of labelled diagrams.
The flash of a gun is seen by a man 3 seconds before the sound is heard. Calculate the distance of the gun from the man (Speed of sound in air is 332 m/s).
Define the term amplitude of a wave. Write its S.I. unit.
An observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound. If the speed of sound is 330 m s-1, find the time when B will hear the sound after firing by A.
Give a scientific reason.
If you were both on the moon, your friend will not be able to hear you call.
The diagram given below shows a displacement distance graph of a wave. If the velocity of wave is 160 ms-1, calculate:
- wavelength
- frequency
- amplitude.
How is sound produced?
What is the SI unit of frequency?
What do you mean by an echo?
Vibration of object produces ______.
Lightning can be seen the moment it occurs. Paheli observes lightning in her area. She hears the sound 5 s after she observed lightning. How far is she from the place where lightning occurs? (speed of sound = 330 m/s).
What types of medium are required for sound to travel?
Give scientific reasons.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
