What is the phase velocity of light in water, if at a frequency of 440 THz the wavelength is 510 nm?
| August 13, 2021 | education
The phase speed of light in water can be calculated using the formula:
υ = λ * n, where λ is the valley of the light wave (λ = 510 nm = 510 * 10 ^ -9 m), n is the wave frequency (n = 440 THz = 440 * 10 ^ 12 Hz).
Let’s calculate the phase speed of light in water:
υ = λ * n = (510 * 10 ^ -9) * (440 * 10 ^ 12) = 224,400,000 m / s = 224.4 * 10 ^ 3 km / s.
Answer: The phase speed of light in water is 224.4 * 10 ^ 3 km / s.
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