Advertisements
Advertisements
प्रश्न
State whether the following statement is true or false :
Sound produced by a vibrating body travels to our ears by the actual movement of air.
Advertisements
उत्तर
False. The sound produced by a vibrating body is a longitudinal wave where energy is transmitted through the medium by successive compressions and rarefactions.
APPEARS IN
संबंधित प्रश्न
How does the sound produced by a vibrating object in a medium reach your ear?
Explain how sound is produced by your school bell.
Select the correct alternative :
Sound travels the fastest in
Describe an experiment to show that each source of sound is a vibrating body.
Describe an experiment to estimate the speed of sound in air.
What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
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?
A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case :
Different sound notes have different ______.
Describe an experiment to show that sound cannot travel through vaccum.
