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When a hydrogen atom absorbs electromagnetic radiation (light), which of the following occurs?
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9. Quantum Mechanics
The Energy of Light
Scelta multipla
Which of the following occurs as the energy of a photon increases?
A
Its wavelength decreases.
B
Its frequency decreases.
C
Its mass increases.
D
Its speed increases.
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Recall the relationship between the energy of a photon (\(E\)), its frequency (\(\nu\)), and Planck's constant (\(h\)): \(E = h \times \nu\).
Understand that as the energy (\(E\)) of a photon increases, its frequency (\(\nu\)) must also increase because Planck's constant (\(h\)) is a fixed value.
Recall the relationship between the speed of light (\(c\)), frequency (\(\nu\)), and wavelength (\(\lambda\)): \(c = \lambda \times \nu\).
Since the speed of light (\(c\)) is constant, if the frequency (\(\nu\)) increases, the wavelength (\(\lambda\)) must decrease to keep the equation balanced.
Conclude that as the energy of a photon increases, its wavelength decreases, its frequency increases, and its speed remains constant; photon mass is zero and does not change.
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