Electromagnetic waves emanating from a point | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The correct option is $(C)$.In the given diagram,the incident ray and the refracted ray lie on the same side of the normal at the interface. Accor

Vedclass · Accepted Answer

if the material has a refractive index less than zero

Vedclass · Answer

(C) The correct option is $(C)$.In the given diagram,the incident ray and the refracted ray lie on the same side of the normal at the interface. According to Snell's Law,$n_1 \sin(i) = n_2 \sin(r)$.If the light travels from air $(n_1 = 1)$ to a medium $(n_2 = n)$,then $\sin(i) = n \sin(r)$.In the provided figure,the angle of refraction $r$ is on the opposite side of the normal compared to standard refraction,which mathematically implies that the refractive index $n$ must be negative.Materials with a negative refractive index are known as Negative Index Metamaterials $(NIM)$. In these materials,the phase velocity is directed opposite to the group velocity (Poynting vector),leading to negative refraction as shown in the diagram.

Similar Questions

When a ray of light of frequency $6 \times 10^{14} \ Hz$ travels from water of refractive index $4/3$ to glass of refractive index $8/5$,its

When a light ray enters from air into water, which of the following properties does not change?

The absolute refractive indices of glass and water are $\frac{3}{2}$ and $\frac{4}{3}$,respectively. The ratio of the velocity of light in glass to that in water will be:

Monochromatic light of wavelength $589 \; nm$ is incident from air on a water surface. What are the wavelength,frequency,and speed of
$(a)$ reflected,and
$(b)$ refracted light? Refractive index of water is $1.33$.

$A$ light ray is incident on a spherical glass surface at an angle $\alpha$ and is refracted at an angle $\beta$. What is the angle of deviation between the emergent ray and the incident ray?

Vedclass Test Series

Exam Paper Generator

Online Exam Module