Advertisements
Advertisements
Question
The time interval between a lightning flash and the first sound of thunder was found to be 5 s. If the speed of sound in air is 330 m s-1, find the distance of flash from the observer.
Advertisements
Solution
Speed of sound in air (V) = 330 m/s
Time in which thunder is heard after lighting is seen (t) = 5s
Thus, distance between flash and observer = V x t = (330 x 5) = 1650 m
APPEARS IN
RELATED QUESTIONS
Describe with the help of a diagram, how compressions and rarefactions are produced in air near a source of sound.
Select the correct alternative :
Sound cannot travel in
Compare approximately the speed of sound in air, water and steel.
A boy fires a gun and another boy at a distance hears the sound of fire 2.5s after seeing the flash. If the speed of sound in air 340 m/s, find distance between the boys.
Assuming the speed of sound in air equal to 340 m/s and in water equal to 1360 m/s, find the time taken to travel a distance 1700 m by sound in (i) air (ii) water.
Describe an experiment to prove that a material medium is necessary for the propagation of sound.
Can sound propagate in solids and liquids?
Can we hear sounds of frequencies:
More than 20 KHZ
Do all animals have same ranges of audible frequencies?
The small to and fro motion is called vibration.
