Question
Physics Question on Atoms
Which source is associated with a line emission spectrum?
A
Electric fire
B
Neon street sign
C
Red traffic light
D
Sun
Answer
Neon street sign
Explanation
Solution
The correct answer is B:Neon street sign
Neon lighting comprises brilliantly illuminated glass tubes or bulbs filled with rarefied neon or other gases, and it falls under the category of cold cathode gas-discharge lighting. Consequently, neon street signs are connected to a line emission spectrum.