A learner writes the following statements about the emission spectrum of light in a notebook:
An emission spectrum is formed when certain frequencies of electromagnetic radiation pass through a cold gas
The lines in the emission spectrum of an atom have the same frequency as the corresponding lines in the atom’s absorption spectrum
An emission spectrum is formed when the atom makes transitions from a high-energy state to a lower energy state
Which one of the following combinations of the statements above is correct?
Select one:
a. 1 only
b. 2 and 3 only
c. 1 and 3 only
d. 2 only
Clear my choice