Advertisements
Advertisements
Question
How does the sound produced by a vibrating object in a medium reach your ears?
Advertisements
Solution
When an object vibrates, it forces the neighbouring particles of the medium to vibrate. These vibrating particles then force the particles adjacent to them to vibrate. In this way vibrations produced by an object are transferred till it reaches the ear.
APPEARS IN
RELATED QUESTIONS
Name the characteristic which differentiates two sounds of the same pitch and same loudness.
What is the difference between a compression and a rarefaction in a sound wave? Illustrate your answer with a sketch.
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).
Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros ?
Match the pairs.
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (1) Frequency less than 20 Hz |
| (b) Frequency | (2) Frequency more than 20000 Hz |
| (c) Sound level | (3) Vibrations in the air |
| (d) Ultrasonic sound | (4) Measured in Hz |
| (e) Infrasonic sound | (5) Decibel |
Select the correct option:
A part of the longitudinal wave in which particles of the medium are closer than the normal particles is called:
A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through ______.
Rapid back and forth motion of a particle about its mean position is called _____.
Two observers are stationed in two boats 4.5 km apart. A sound signal sent by one, under water, reaches the other after 3 seconds. What is the speed of sound in the water?
Sound cannot travel through ______.
