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.
We can hear sounds of frequency in the range of _______
What is the vacuum? Explain why, sound cannot travel through vacuum?
Which one of the following does not consist of transverse waves?
What is musical sound? Give an example.
An observer X is on an island 5500 m from a vertical cliff on the shore. A ship Y is anchored between the island and the Cliff. A blast on the ship’s siren is heard twice by X, the interval being 5s. [Velocity of sound = 330 ms−1]
(i) Find the distance of the ship from the island.
(i) Find the distance of the cliff from the ship.
A sound wave of wavelength 1/3 m has a frequency 996 Hz. Keeping the medium same, if frequency changes to 1328 Hz. Calculate
- velcoity of sound
- new wavelength.
A person fires a gun and other boy at a distance hears the sound of the fire 2.5 s after seeing the flash. If the speed of sound in air is 330 ms-1, find the distance between the boys.
Sound travels in the form of ______.
In which medium the speed of the sound is maximum?
What is a wave?
