A light wave with a wavelength of 550 nm has a frequency of approximately what value?

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Multiple Choice

A light wave with a wavelength of 550 nm has a frequency of approximately what value?

Explanation:
Light’s frequency and wavelength are tied by f = c/λ, where c is the speed of light in vacuum. Convert 550 nm to meters: 550 nm = 5.50×10^-7 m. Then f ≈ (3.00×10^8 m/s) / (5.50×10^-7 m) ≈ 0.545×10^15 Hz = 5.45×10^14 Hz. So the frequency is about 5.45×10^14 Hz, which corresponds to green light near 550 nm.

Light’s frequency and wavelength are tied by f = c/λ, where c is the speed of light in vacuum. Convert 550 nm to meters: 550 nm = 5.50×10^-7 m. Then f ≈ (3.00×10^8 m/s) / (5.50×10^-7 m) ≈ 0.545×10^15 Hz = 5.45×10^14 Hz. So the frequency is about 5.45×10^14 Hz, which corresponds to green light near 550 nm.

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