Question

Which of the following occurs as a light wave bends when it passes from one medium to another

Answer 1

Answer: c. Refraction

Refraction is a phenomenon in which a light wave bends or changes its direction when passing through a medium with a refractive index different from the other medium.  

Being the refractive index $n$ is a number that describes how fast light propagates through a medium or material, and is defined as the relation between the speed of light in vacuum ($c=3(10)^{8}m/s$) and the speed of light $v$ in the second medium:

$n=\frac{c}{v}$

It is important to note that in this process, the wavelength may be modified because it depends on the medium, however, the refracted ray of light does not change its frequency.