If the population of ground state exceeds the population of the excited state a net absorption of __________ radiation takes place.
A. Infrared
B. Ultraviolet
C. Microwave
D. X-ray
Answer:C
If the population of ground state exceeds the population of the excited state a net absorption of __________ radiation takes place.
A. Infrared B. Ultraviolet C. Microwave D. X-ray
Explanation: If the population of ground state exceeds the population of the excited state a net absorption of microwave radiation takes place. The signal would be proportional to the population difference.