In a CD player, light from a laser diode enters a plastic disc and reflects from a layer of shiny aluminum. Before it enters the plastic, the laser light has a frequency of
A) 385,000,000,000,000,000 Hz
B) 385,000,000,000 Hz
C) 385,000,000,000,000 Hz.
D) 385,000 Hz

Question

Quizplus · Accepted Answer

The frequency of visible light, which is typically used in CD players, is around 10^14 Hz.

In a CD Player, Light from a Laser Diode Enters