MCQ
A neon sign does not produce
- ALine spectrum
- BAn emission spectrum
- ✓An absorption spectrum
- DPhotons
✓
Answer
Correct option: C.
An absorption spectrum
c
Neon sign tube is filled with Neon gas which is put on a high voltage causing the electrons to get excited. When these electrons come back to the ground state they release energy in form of packets or simply photons which causes the glow.
Neon sign tube is filled with Neon gas which is put on a high voltage causing the electrons to get excited. When these electrons come back to the ground state they release energy in form of packets or simply photons which causes the glow.
In Neon gas there is a certain pattern of atoms. Or in other words, atoms are present there which will cause the discontinuation of a continuous spectrum. Thus a line spectrum is eminent in this case.
Now, these electrons emit photons when coming back to the ground state from excited state. Hence, they will produce an emission spectrum. These electrons in the Neon gas are excited due to high voltage. The atoms do not absorb energy. Hence, there is no absorption spectrum in this case.
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