Question

when a dvd is played, a laser light hits the surface of the disk and then returns to the detector. which wave phenomenon allows the dvd player to work? absorption interference reflection refraction

Explanation:

When a DVD is played, a laser light hits the surface of the disk and then returns to the detector. This return of light is due to reflection. Reflection is the phenomenon where light bounces off a surface. In the case of a DVD, the laser light reflects off the surface (which has pits and lands that represent data) and the reflected light is detected. Absorption would mean the light is taken in by the disk and not returned. Interference is about the interaction of waves (like constructive or destructive interference of light waves) which is not the main principle here. Refraction is the bending of light as it passes from one medium to another, which is not what occurs when the laser light just hits the disk surface and returns. So the wave phenomenon that allows the DVD player to work is reflection.

Answer:

C. reflection