Question

The property required for propagation of transverse wave is:
(A) Longitudinal strain
(B) Lateral strain
(C) Shearing strain
(D) Poisson’s ratio

Answer 1

Hint We know that in a transverse wave the particle displacement is perpendicular to the direction of wave propagation. The particles do not move along with the wave; they simply oscillate up and down about their individual equilibrium positions as the wave passes by. Transverse waves are always characterized by particle motion being perpendicular to wave motion. A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves. Transverse wave, motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance. Surface ripples on water, seismic S (secondary) waves, and electromagnetic.

Complete step by step answer
We know that shear strain is measured as a change in angle between lines that were originally perpendicular. Consider an elemental area that undergoes a distortion that produces angular changes, but which leaves the sides of the area approximately the same length. Shear strain is measured as the displacement of the surface that is in direct contact with the applied shear stress from its original position. Shearing stress is force applied tangentially over the surface area of the plane. Shear strain is displacement of the plane over the distance of that surface from the opposite plane. Shear modulus is the ratio of shearing stress to shear strain.
We can add that it occurs when the material is yielding. The process of shearing a material may induce a volumetric strain along with the shear strain. In soil mechanics, the volumetric strain associated with shearing is known as Reynolds' dilation if it increases the volume, or compaction if it decreases the volume.
We know that in the propagation of transverse waves one particle pulls another particle in tangential direction which produces shear-strain.

So, the correct answer is option C.

Note: We know that wave propagation is any of the ways in which waves travel. With respect to the direction of the oscillation relative to the propagation direction, we can distinguish between longitudinal waves and transverse waves. For electromagnetic waves, propagation may occur in a vacuum as well as in a material medium. For mechanical waves such as sound waves, rope waves, ripple, etc require medium in order to propagate because the mechanism of wave propagation is through molecules/atoms distortion or disturbance. The closer the molecules, the faster the wave propagation. Electromagnetic waves are waves which can travel through the vacuum of outer space. Electromagnetic waves are created by the vibration of an electric charge. This vibration creates a wave which has both an electric and a magnetic component.