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प्रश्न
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संबंधित प्रश्न
Write true or false for a given statement.
Loudness depends on frequency.
How do we produce sound ?
State the factors on which the pitch of a sound depends.
List four substances which are good absorbers of sound.
Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
What type of waves are illustrated by the movement of a rope whose one end is fixed to a pole and the other end is moved up and down?
Distinguish between compression and rarefaction.
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.
What is echolocation? How do animals make use of this phenomenon?
Sound travels in air:
