A plane polarized monochromatic EM wave is traveling in 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 electroagnetic wave is :

Question

A plane polarized monochromatic EM wave is traveling in 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 electroagnetic wave is :

${{3 \times {{10}^8}} \over {\left| {{z_2} - {z_1}} \right|}}$

${{1.5 \times {{10}^8}} \over {\left| {{z_2} - {z_1}} \right|}}$

${{6 \times {{10}^8}} \over {\left| {{z_2} - {z_1}} \right|}}$

${1 \over {{t_1} + {{\left| {{z_2} - {z_1}} \right|} \over {3 \times {{10}^8}}}}}$

Solution

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