Sagot :
Answer:
c. speeds that are inversely proportional to their frequency
Explanation:
Frequency and wavelength are inversely proportional. c=f⋅λ (The speed of light is directly proportional to f and λ) . cf=λ (The speed of light is directly proportional to f , and f is inversely proportional to λ) . cλ=f (The speed of light is directly proportional to λ , and λ is inversely proportional to f .
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