Distinguish between longitudinal and transverse waves.

Distinguish between longitudinal waves and transverse waves.

What are longitudinal waves and transverse waves ?

Sound travels in rocks in the form of both longitudinal and transverse waves, but in air, sound travels only in the form of longitudinal waves'. Explain

Assertion : Solids, can support both longitudinal and transverse waves but only longitudinal waves can propagate in gases. Reason : For the proagation of transverse waves, medium must also necessarily have the property of rigidity.

Explain why (or how) : (a) In a sound wave, a displacement node is a pressure antinode an dvice-versa, (b) Bats can ascertain distances, directions, nature and size of obstacles without any eyes, (c) a violin note and sitar note may have the same frequency, yet we can distinguish between the two notes, (d) Solids can support both longitudinal and transverse waves, but only longitudinal waves can propagate in gases, (e) The shape of pulse gets distorted during propagation in a dispersive medium.

Sound waves are transverse waves.

During earthquake, both longifudinal and transverse waves are produced having speeds 4.0km//s and 8.0km//s respectively. If the first transverse wave reahes the seismograph 8 miniutes after the arrival of first longitudinal wave, then find the distance of the position, where the earthquake occured.

Distinguish between transverse and longitudinal waves.