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
What is sound ?
How does a bat make use of ultrasonics waves to find its way?
Why are musical instruments provided with more than one string ?
Name the type of waves produced when a tuning fork is struck in air.
Explain the terms 'crests' and troughs' of a wave? What type of waves consist of crests and troughs?
Describe a simple experiment to determine the speed of sound in air. What approximation is made in the method described by you?
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 medium is necessary for ______ of sound.
How is the sound produced?
What do you understand by the term echo?
