Advertisements
Advertisements
Question
Draw the sketches of two waves A and B such that wave A has twice the wavelength and half the amplitude of wave B.
Advertisements
Solution
We can conclude that wave B is louder than wave A as loudness of sound is directly proportional to the amplitude of the wave.
APPEARS IN
RELATED QUESTIONS
How does the sound produced by a vibrating object in a medium reach your ear?
Fill in the blank.
Sound is produced when a body ______.
What minimum distance is required between the source of sound and the reflecting surface to hear an echo ? Give reason.
If a ringing bicycle bell is held tightly by hand, it stops producing sound. Why?
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 :
How is sound produced in a human larynx and a loudspeaker?
Match the following:
| Human larynx | Vibrations of metal arms |
| Loudspeaker | Vibrations in air column |
| Jal-Tarang | Vibrations in vocal cords |
| Tuning fork | Vibrations in strings |
| Sitar | Vibrations of screen |
Write the answer in your own words.
What is meant by vibration?
What is vibration?
