If the particles of the medium vibrate parallel to the direction of propagation of waves,The waves are called ......?

If the direction of the vibration of particles is parallel to the direction of the propagation of a wave , then the wave is

Intensity of plane electromagnetic waves in the direction of propagation of wave

Fill in the blanks by choosing an appropriate option. In a ul(" (i) ") wave the particles of the medium oscillate in a direction ul(" (ii) ") to the direction of propagation. Thus, during their oscillations, the particles may move upwards or downwards from the plane passing through their mean positions. The point of maximum positive displacement on a transverse wave is called ul(" (iii) ") and the point of maximum negative displacement is called ul(" (iv) ") . The wave produced in a stretched string when plucked are ul(" (v) ") waves.

The waves in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion is known as

The propagation constant of a wave is also calle its

During the propagation of e.m. wave in a medium