Wave Speed Physics Example 3

Follow the full solution, then compare it with the other examples linked below.

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An electromagnetic wave has a frequency of

5 \times 10^{14} \text{ Hz}

. What is its wavelength? Use

c = 3 \times 10^8 \text{ m/s}

1
Use $\lambda = \frac{c}{f}$ .
2
$\lambda = \frac{3 \times 10^8}{5 \times 10^{14}} = 6 \times 10^{-7} \text{ m} = 600 \text{ nm}$

Answer

\lambda = 600 \text{ nm (orange light)}

All electromagnetic waves travel at the speed of light in a vacuum. The wavelength determines the type of EM radiation, with

600 \text{ nm}

falling in the visible orange region.

About Wave Speed

Wave speed is the distance a wave pattern travels each second through a medium.

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