Question: A standing electromagnetic wave in a certain material has frequency 2.20 x 1010 Hz. The nodal planes of B are 3.55 mm apart. Find (a)

A standing electromagnetic wave in a certain material has frequency 2.20 x 1010 Hz. The nodal planes of B are 3.55 mm apart. Find
(a) The wavelength of the wave in this material;
(b) The distance between adjacent nodal planes of the E field;
(c) The speed of propagation of the wave.

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