Advertisements
Advertisements
प्रश्न
A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.
Advertisements
उत्तर
We have to find the velocity of the sound wave.
Frequency is number of vibrations produced per second.
Given: Frequency f = 128 Hz
Wavelength λ = 2.7 m
We know the relation between velocity, frequency, and wavelength ν = f × λ,
where ν is the velocity, f the frequency, and λ the wavelength.
So,
ν = (128) × (2.7) m/s
= 345.6 m/s
Therefore, velocity of sound is 346 m/s .
APPEARS IN
संबंधित प्रश्न
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?
Describe an experiment to show that sound can travel in water.
Describe an experiment to show that sound can travel in a solid.
A jet aircraft flies at a speed of 410 m/s. What is this speed known as?
When we put our ear to a railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?
Fill in the blank with suitable word :
The speed of sound in a solid is ............... than the speed of sound in air.
The speeds of sound in four different media are given below. Which of the following is the most likely speed in m/s with which the two under water whales in a sea talk to each other when separated by a large distance?
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a village
Nita heard the sound of lightning after 4 seconds of seeing it. What was the distance of the lightning from her?
(The velocity of sound in air is 340 m/s.)
The speed of sound in a gaseous medium depends on ______.
