70.
Which of the following definitions is best suited to describe phenomenon of florescence;
A:
Absorb light as UV radiations and release a portion in visible wavelengths
B:
Absorb light as IR radiations and release a portion in visible wavelengths
C:
Absorb light as Visible radiations and release a portion in UV wavelengths
D:
Absorb light as Visible radiations and release a portion in IR wavelengths
The answer is:
A