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Which best describes the relationship between the terms “frequency,” “wavelength,” and “hertz”?
Wavelength is the number of frequencies, which is measured in hertz.
Frequency is the number of wavelengths, which is measured in hertz.
Wavelength is measured from frequency to hertz.
Frequency is measured from wavelength to hertz.
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The second option is closest: "Frequency is the number of wavelengths, which is measured in hertz."
More precisely:
- Frequency (f) = number of wave cycles passing a point per second, measured in hertz (Hz, i.e. s⁻¹).
- Wavelength (λ) = physical distance between successive identical points on the wave (e.g. peak to peak).
- They are related by f · λ = v, where v is the wave speed (for light in vacuum v = c ≈ 3.00×10^8 m/s). Example: a 100 MHz radio wave (f = 1.00×10^8 Hz) in vacuum has λ = c/f ≈ 3.0 m.
More precisely:
- Frequency (f) = number of wave cycles passing a point per second, measured in hertz (Hz, i.e. s⁻¹).
- Wavelength (λ) = physical distance between successive identical points on the wave (e.g. peak to peak).
- They are related by f · λ = v, where v is the wave speed (for light in vacuum v = c ≈ 3.00×10^8 m/s). Example: a 100 MHz radio wave (f = 1.00×10^8 Hz) in vacuum has λ = c/f ≈ 3.0 m.
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