Advertisements
Advertisements
प्रश्न
Define the term intensity of a sound wave. State the unit in which it is measured.
Advertisements
उत्तर
The intensity at any point of the medium is the amount of sound energy passing per second normally through unit area at that point. Its unit is microwatt per metre2.
संबंधित प्रश्न
Select the correct alternative :
Wavelength is measured in
How is sound produced ?
How do we produce sound ?
State the general name of the waves in which the particles of the medium vibrate :
(i) in the same direction as wave.
(ii) at right angles to the direction of wave.
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 continuous disturbance is created on the surface of water in a ripple tank with a small piece of cork floating on it. Describe the motion of the cork. What does the motion of the cork tell about the disturbance?
200 waves pass through a point in one second. Calculate the time period of wave.
A bat emits an ultrasonic sound of frequency 0.25 MHz. Calculate the time in which one vibration is completed.
What happens to the speed of sound when it gases from a solid to a gaseous state?
