Question

An incident coherent light ray strikes the interface between two different media with indices of refraction n₁ and n₂ (see figure below). Part of the ray gets reflected, and part of the ray gets refracted. Based on the information shown in the figure, which of the following is true? Let v₁ and v₂ be the speed of light in media 1 and 2, respectively.

v1 < v2

v1 = v2

The reflected ray undergoes no phase shift relative to the incident ray.

The reflected ray has undergone a phase shift of ½ a wavelength relative to the incident ray.

None of the above statements are true.

Answer 1

ray ） An incident coherent light ray strikes the interface between two different media with indices of refraction ni and na (see figure below). Part of the gets reflected, and part of the ray gets refracted Based on the information shown in the figure, which of the following is true ? be the speed of light in medico I and I respecti - vely. Let vi and V2 Vi <V₂ V = V2 111 no The reflected ray wrider goes phase shift relative to the incident ray. reflected has shift of a phase ray undergone to the incident ray. The re wave length relative of the above None statements are true. Неге, as the refracted angle oz Incident ray is much less than the incident 12 SO TO2 refracted ray ie i the medium 2 angle is denser than medium 1. So the optical density increases, and the speed of light In that material decreases. statement ③ and ④ Reflected mediat media 2 So is not true. we consider Now if the se reflected ray the reflected ray undergoes phase shift of 180°. statement also not don't have much informon tion so state ment (1) also not So a is true . And also wa true. the write answer is. Therefore, None of the above statesments are true.