Question Detail

PHY 104 Atomic Structures Objective Question
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Question

How does an absorption spectrum differ from an emission spectrum?
Options
A An absorption spectrum consists of bright lines, while an emission spectrum has dark lines.
B An absorption spectrum shows wavelengths of light absorbed by a gas, appearing as dark lines, while an emission spectrum shows wavelengths emitted by a glowing gas as colored lines.
Correct Answer
C Both show a continuous band of colors.
D An absorption spectrum is produced only by solids, an emission spectrum only by gases.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The text states: 'An emission spectrum consists of a series of coloured lines that corresponds wavelengths emitted by the glowing gas.' and 'An absorption spectrum has dark lines or gaps in the spectrum corresponding to wavelengths that are absorbed by the gas.'

Hint

Consider whether energy is being taken in or given out by the atoms in each type of spectrum.

Question Info

Course: PHY 104
Topic: Atomic Structures
Type: Objective
Difficulty: Not specified
Question 141 of 947
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