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The number of wave cycles passing a point each second is the wave's:
AFidelity
BFrequency
CFluency
DFluidity
Answer & Solution
Correct answer: B. Frequency
1. Counting crests per second measures how fast cycles arrive.
2. That count has its own name.
3. It is the frequency.
_Source: OpenStax Astronomy 2e, Chapter 5, Radiation and Spectra._
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