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Waves: relation between frequency and wavelength 0001

An electromagnetic wave is travelling through a vacuum. If its frequency is 1 MHz, what will be its wavelength?

SOLUCIÓN

The propagation speed of a wave is the product between the values of frequency and wavelength. We can clear the wavelength in the equation: v = \lambda \cdot \nu\ \to\ \lambda = \frac{v}{\nu}
Speed of an electromagnetic wave in a vacuum is the speed of light in a vacuum:

\lambda = \frac{3\cdot 10^8\ m\cdot s^{-1}}{10^6\ s^{-1}} = \bf 3\cdot 10^2\ m

 

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