3 years ago

a light wave travels at 3.0 x 10^8 m/s. if the wavelength of a red wave is 700 x 10^-9m, what is the frequency?

1 answer:

3 0

Frequency = (speed) divided by (wavelength)

   = (3 x 10⁸ m/s) / (700 x 10⁻⁹ m)

   = (3 / 700) x 10¹⁷ ( per sec )

   = 4.286 x 10¹⁴ per sec = 4.286 x 10¹⁴ Hz.

   = 42,860 GHz .

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