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

Fill in the blanks : During the propagation of the wave through a medium, the ………………… of the medium do not change their positions.

(a) An e.m. wave is travelling in a medium with a velocity vecv=vhati .Draw a sketch showing the propagation of the e.m. wave, indicating the direction of the oscillating electric and magentic fields. (b) How are the magnitudes of the electric and magnetic fields related to the velocity of the e.m. wave?

During the propogation wave in a medium

Choose the correct alternative. : During the propagation of sound wave through medium, there is change in density and ………….. Of the medium.

The pressure variations in the propagation of sound waves in gaseous medium are

During the propagation of electromagnetic waves in a medium