In the process of fluorescence, the input is high-frequency light and the output is
A)higher-frequency light.
B)equally high-frequency light.
C)lower-frequency light.
D)none of the above

Question

Quizplus · Accepted Answer

In fluorescence, a molecule absorbs high-frequency light and then emits lower-frequency light. This is because the absorption of high-frequency light excites the molecule to a higher energy level, and when the molecule returns to its original (ground) state, it releases the excess energy as lower frequency light. Therefore, the output of fluorescence is always lower frequency (longer wavelength) than the input light.

In the Process of Fluorescence, the Input Is High-Frequency Light