Question

In the propagation of polarised light waves, the angle between the plane of vibration and the plane of polarization is
A. $$0{}^{\circ }$$
B. $$90{}^{\circ }$$
C. $${45}^{\circ }$$
D. $${180}^{\circ }$$

Answer 1

Hint: The above problem can resolve the concept of the plane of vibration. Firstly the plane of vibrations is that specific region where one can observe the fundamental vibration of the electromagnetic waves like the electric waves and the magnetic waves; they also sometimes can be designated as the plane of vibration of the electric field and the magnetic field. There are some specific positions for which these planes are always aligned, In general, they lie in making the right angle in the context of each other.

Complete step by step answer:
Whenever it is observed that in a region at a specific point, the magnetic as well as the electric field exists such that they are propagating in a specific medium, then one can judge the vibration caused due to electric field and magnetic field as the perpendicular vibration in the context of each other. These vibrations take place at a specific plane known as the plane of vibration. In addition, the place of vibration is simply known as the plane of polarization, and as both electric field vibrations and the magnetic field vibrations take place in perpendicular directions, then the two planes of vibrations lie at 90 degrees.
Therefore, the angle between the plane of vibration and the plane of polarization is $$90{}^{\circ }$$

So, the correct answer is “Option B”.

Note:
Firstly, it is necessary to understand the meaning of the plane of vibrations along with some basic terms like the electric field and the magnetic field to resolve the problem and the problem related to the given condition. Then it is required to understand the meaning of the plane of vibration and its significance with that of the plane of polarisation. In general, the plane of vibration is the plane where the electric field's vibration and the magnetic field takes place; when this happens, one can develop the relationship for the corresponding planes.