The electric fields of two plane electromagnetic plane waves in vacuum are given by
\(\vec{\text{E}}_1\) = E0ĵ cos(ωt − kx) and \(\vec{\text{E}}_2\) = E0k̂ cos(ωt − ky)
At t = 0, a particle of charge q is at origin with a velocity \(\vec{\text{v}}\) = 0.8 cĵ (c is the speed of light in vaccum). The instantaneous force experienced by the particle is :
1
E0q (−0.8î + ĵ + k̂)
2
E0q (0.8î + ĵ + 0.2k̂)
3
E0q (0.4î − 3ĵ + 0.8k̂)
4
E0q (0.8î − ĵ + 0.4k̂)