# What is the period of oscillations in an electromagnetic wave if its wavelength in vacuum is 10m?

May 28, 2021 | education

| The period is calculated by the formula

T = 1 / f,

Where

T – period;

f is the frequency.

f = c / L,

here

c – speed of propagation of an electromagnetic wave in a vacuum (m / s);

L – wavelength (m).

Let’s calculate the period

T = 1 / (c / L) = L / c;

T = 10 / (3 * 10 ^ 8) = 3.3 * 10 ^ -8 s.

Answer: 3.3 * 10 ^ -8 s.

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