Advertisements
Advertisements
प्रश्न
The wavelength of the vibrations produced on the surface of water is 2 cm. If the wave velocity is 16 ms-1, calculate:
- no. of waves produced in one second
- time required to produce one wave.
Advertisements
उत्तर
wavelength = λ = 2 cm = 0.02 m
Wave velocity = v = 16 ms-1
Frequency = f = ?
We know = v = λf
f = `"v"/lambda`
f = `16/0.02` = 800 Hz
⇒ 800 waves are produced in one second.
Time period = T = `1/"f"`
T = `1/800`
T = 0.00125s
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
________ produces a sensation in ears.
Select the correct alternative :
Wavelength is measured in
Draw a graph between displacement from mean position and time for a body executing free vibrations in vacuum.
Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
Name the type of waves produced when a tuning fork is struck in air.
What cause sound? Why do we require a material medium for the transmission of sound?
Explain how the principle of echo is used by
The bat during its flight at night
Give an example to show that light travels faster than sound?
Sound is a ______ wave and needs a material medium to travel.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
