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3 votes
Which property of light remains unchanged when it enters a different medium?

A amplitude
B frequency
C wavelength
D velocity
E density

2 Answers

5 votes

the answer is b frequency

User Skeith
by
8.9k points
1 vote
B. Frequency remains unchanged because the energy in a photon is E=hf. So if the frequency changes so does the energy and that doesn't happen to EM waves entering a medium by the conservation of energy
User Victor Deryagin
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8.3k points