Advertisements
Advertisements
Question
Describe a simple experiment to determine the speed of sound in air. What approximation is made in the method described by you?
Advertisements
Solution
The simple experiment that a person can do to calculate the speed of sound in air is that a person stands at a known distance (d meter) from the cliff and fires a pistol and simultaneously start the stopwatch. He stops the stopwatch as soon as he hears an echo. The distance travelled by the sound during the time (t) seconds is 2d. So, speed of sound = distance travelled / time taken = 2d/t
The approximation made is that speed of sound remains same for the time when the experiment is taking place.
APPEARS IN
RELATED QUESTIONS
The bees do not have voice-boxes. How do they produce sound ?
List the measures that you will take when designing a sound-proof room.
Define the term intensity of a sound wave. State the unit in which it is measured.
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 ?
How is the sound produced?
he sound of an explosion on the surface of a lake is heard by a boatman 120 m away and by a diver 120 m below the point of explosion. Out of the two persons, who would hear the sound first? Why?
Name the factors on which the speed of sound depends.
Sound travels in the form of ______.
______ is an unwanted sound.
