A plane polarized monochromatic EM wave is travelling a vacuum along z direction such that at t=t1 it is found that the electric field is zero at a spatial point z1. The next zero that occurs in its neighbourhood is at z2. The frequency of the electromagnetic wave is:
Held on 15 Apr 2018 · Verified 6 Jul 2026.
∣z2−z1∣3×108
∣z2−z1∣6×108
∣z2−z1∣1.5×108
t1+3×108∣z2−z1∣1
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