4
QuizMultiple Choice

Atomic Spectra — Quiz

Question 4 • Physics

What causes the appearance of lines in an emission spectrum?

Answer
A
Light is absorbed as an electron moves to a higher energy state.
B
Light is released as an electron moves to a lower energy state.
C
An electron is released as light when it moves to a lower energy state.
D
An electron is released as light when it moves to a higher energy state.

Explanation

An emission spectrum forms when an electron drops from a higher energy state to a lower one and releases the energy difference as light. The emitted light has specific wavelengths, which appear as lines. Thus, the correct choice is “Light is released as an electron moves to a lower energy state.”

AI-written and checked against the verified answer.

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