If the absorption of electromagnetic radiation by matter results in the emission of radiation of same or longer wavelengths for a long time, the phenomenon is termed as which of the following?
A. Luminescence
B. Fluorescence
C. Phosphorescence
D. Spontaneous emission
Answer:C
If the absorption of electromagnetic radiation by matter results in the emission of radiation of same or longer wavelengths for a long time, the phenomenon is termed as which of the following?
A. Luminescence B. Fluorescence C. Phosphorescence D. Spontaneous emission
Explanation: If the absorption of electromagnetic radiation by matter results in the emission of radiation of same or longer wavelengths for a long time, the phenomenon is termed as phosphorescence. Phosphorescence is a type of luminescence.