a Explain the terms compression and rarefactions of a wave What type of waves consists of compressio...

Question

a Explain the terms compression and rarefactions of a wave What type of waves consists of compression and rarefaction b A worker lives at a distance of 132 km from the factory If the speed of sound in the air be 330 ms how much time will the sound of factory siren take to reach the worker

Accepted Answer

a Compression is a part of a longitudinal wave in which the particles of the medium are close to each other which reduces the volume of the medium Rarefaction is also a part of a longitudinal wave in which the particles of the medium are farther apart from each other which increases the volume of the medium b Speed 330 ms Distance 132 km 1320 m Time distancespeed 1320330 4s

Lakhmir Singh Solutions Class 9 Physics Solutions for Exercise in Chapter 5 - Sound