Physics
NULL
Medium
Question
After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________?
A
Increases because wavelength decreases
B
Decreases because speed decreases
C
Remains same
✓ Official correct answer
D
Increases then decrease
Community credibility
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A
Increases because wavelength decreases
No member explanations yet for this option.
B
Decreases because speed decreases
No member explanations yet for this option.
C
Remains same
No member explanations yet for this option.
D
Increases then decrease
No member explanations yet for this option.
Explanation
A photon's energy E=hf depends only on its frequency, which stays the same when light passes from vacuum into a denser medium (only its speed and wavelength change), so its energy remains unchanged.
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