Advertisements
Advertisements
प्रश्न
Explain why you can predict the arrival of a train by placing your ear on the rails without seeing it.
Advertisements
उत्तर
The sound produced by the moving wheels of train travels much faster through the track than through the air. Therefore they hear through the track much before it is heard through the – air.
APPEARS IN
संबंधित प्रश्न
Describe an experiment to estimate the speed of sound in air.
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
What conclusion can be obtained from the observation that when the prongs of a sound making tuning fork touch the surface of water in a beaker, the water gets splashed?
A tuning fork has a number 256 marked on it. What does this number signify?
What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
Fill in the blank with suitable word.
When the frequency of the sound is increased, the wavelength ____________.
In the sound wave produced by a vibrating turning fork shown in the diagram, half the wavelength is represented by :
Medium is ______ for generation of sound.
Different sound notes have different ______.
Sound is produced by ______.
