Advertisements
Advertisements
प्रश्न
A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air be 330 m/s, how much time will the sound of factory siren take to reach the worker?
Advertisements
उत्तर
We have to calculate the time taken by the sound wave to reach the observer.
Given: Velocity of sound ν = 330 m/s
Distance between the observer and the source d = 1,320 m.
We know, `"Time" = "Distance"/"Speed"`
Therefore , time taken by the sound wave to reach the observer is = `1320/330` s
= 4 s
So , the time taken is 4 s .
APPEARS IN
संबंधित प्रश्न
Describe an experiment to show that sound can travel in water.
Write the approximate speed of sound in water .
Can sound travel through solids and liquids ? In which of these two does it travel faster ?
What name is given to those aircrafts which fly at speeds greater than the speed of sound?
Calculate the frequency of a wave whose time-period is 0.02 s.
A cricket ball is seen to hit the bat first and the sound of hitting is heard a little later. Why?
Hydrogen gas is filled in two identical bottles, A and B, at the same temperature. The mass of hydrogen in the two bottles is 12 gm and 48 gm respectively. In which bottle will sound travel faster? How many times be as fast as the other?
Why does sound travel faster on a rainy day than on a dry day?
The speed of sound in a gaseous medium depends on ______.
Numerical problems:
A Sound wave travels at a speed of 344 ms-1. If the wavelength is 1.5 cm, what is the frequency of the Wave? Will it be audible?
