​Snell's law is associated with which phenomenon of light?

Correct option is A

The correct answer is (a) Refraction

Explanation:

Snell's Law describes how light rays bend or change direction when they pass from one medium to another, such as from air into water or glass. This bending is called refraction, and Snell’s law provides the mathematical relationship that governs the amount of bending.

The law states that:

​$$\frac{\sin(\theta_1)}{\sin(\theta_2)} = \frac{v_1}{v_2} = \frac{n_2}{n_1}$$​​

Where:

• ​$$\theta_1$$​​ is the angle of incidence (angle between the incident ray and the normal to the surface),
• ​$$\theta_2​$$​ is the angle of refraction (angle between the refracted ray and the normal),
• ​$$n_1$$​ and $$n_2$$​ are the refractive indices of the two media,
• ​$$v_1$$​​ and $$v_2​$$​ are the velocities of light in the respective media.

Thus, Snell's Law is primarily associated with the phenomenon of refraction.

Information Booster:

·       Refractive Index: The refractive index n of a medium is the ratio of the speed of light in a vacuum to the speed of light in the medium. The higher the refractive index, the slower light travels through the medium.

·       Practical Applications: Snell's Law has many applications, including the design of lenses, optical fibers, and the bending of light in water. It also helps in understanding phenomena like mirages and rainbows.

Additional Knowledge –:

• Dispersion: Dispersion refers to the separation of light into its different colors, like in a prism. It’s not governed by Snell's Law but by the material's refractive index varying with wavelength.
• Reflection: Reflection occurs when light bounces off a surface. The law of reflection (angle of incidence equals the angle of reflection) governs.
• Diffraction: Diffraction occurs when light bends around obstacles or passes through narrow slits, causing patterns of interference.