Question

Visible light waves that our eyes see as the color red have a wavelength of about 6.7 x 10-7 meters. What is the frequency of these waves? The speed of light is 3.0 x 10 8 m/s. [v = 1f]

Answer 1

The frequency of these visible light waves that our eyes see is equal to $4.47\times 10^{-14}\;Hz$

What is wavelength?

Wavelength refers to the distance between two (2) successive crests (troughs) of a wave.

How to calculate frequency.

Mathematically, the frequency of a wave is given by this formula:

$F = \frac{V}{\lambda}$

Where:

• F is the frequency of a wave.

• V is the speed of a wave.

• $\lambda$ is the wavelength of a wave.

Substituting the given parameters into the formula, we have;

$F=\frac{3 \times 10^8}{6.7 \times 10^{-7}} \\\\F=4.47\times 10^{-14}\;Hz$

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