Question

3. In the diagram at right, the four points labeled "x" are all located in a plane parallel to the y-z plane. One of the labeled points is located on the x-axis. On the diagram, sketch vectors to show the direction and relative magnitode of the electric ield at the labeled points. Justify the use of the term plane wave for this electromagnetic wave. Check your answers to part A with a tutorial instructor. B. Three light waves are represented at right. The diagrams are drawn to the same scale. Case 1 1. How is the wave in case 1 different from the wave in case 2? Explain how you can tell from the dingrams. Case 2 Jalliaradils If the wave in case 2 were green light, could the wave in case 3 be red #ght or blue light? Explain. 2. Case 3

Answer 1

Hello dear... for the question no. B

Part 1.. In both the cases 1 and 2, the phase between the electric fields or between the magnetic fields are zero and the period is also the same but, the amplitudes in the case 2 are higher than in the case of 1. That is , the electric field and the magnetic field in the case 2 have higher amplitudes than the electric and magnetic field have in the case 1 but have the same frequency or period.

Part 2..

Now for the question no. 3, it is called plane wave because the electric field and the magnetic field both are perpendicular to each other as well as to the direction of propagation . these field lie in a plane which is perpendicular to the direction of propagation. that is why it is called a plane wave.

We kuow velocity f ight fquny f ime parisd where is I light also kuro Now We T . f Coustan e, T and Cas 3, fEusof Nod CASe 2 prid of tha than the fiue time that We can See we in ttu case 3 1s Varges peri in case 2 a n the case 3 is louger Than te waeloug I in t case -2 Jveen light i case- 2 owld be red light in the Wane tten the Wave Case-3

Now for the first part, i am not understood very well about the question ... I am sorry about that.. i just wanted to help you for the next parts...Thanks Dear, Cheers