Some light switches glow in the dark after the lights are turned off.This is because of

Question

Quizplus · Accepted Answer

The glow of the light switch is due to a time delay between excitation and de-excitation. When the switch is turned on, it absorbs energy. When it is turned off, the switch slowly releases this energy in the form of light, which causes it to glow in the dark. This process is known as phosphorescence or afterglow, which falls under the category of a time delay between excitation and de-excitation. None of the other options are correct as fluorescence is immediate emission of light, resonance is a phenomenon of vibration, and incandescence simply refers to the emission of light due to high temperature.

Some Light Switches Glow in the Dark After the Lights