In a plane electromagnetic wave travelling in vacuum

PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

In a plane electromagnetic wave travelling in vacuum, the magnetic field amplitude is

B_0 = 2.0\times10^{-7}\,\text{T}

and the wavelength is

500\,\text{nm}

. Take

c = 3.0\times10^{8}\,\text{m}\,\text{s}^{-1}

. (i) Find the electric field amplitude

E_0

. (ii) Determine the frequency of the wave. (iii) Calculate its period. (iv) Calculate its angular frequency. (v) Find its wave number.