Official PYQ · 2003Set 1 · Q87Plane Waves and PropertiesMCQ1 mark

GATE EC 2003 Set 1 Q87 — Plane Waves and Properties

If the electric field intensity associated with a uniform plane electromagnetic wave travelling in a perfect dielectric medium is given by $E(z, t)=10 \cos \left(2 \pi \times 10^{7} t=0.1 \pi z\right)$ volt $/ \mathrm{m}$ , then the velocity of the travelling wave is

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Published 10 Oct 2026

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Consider a rectangular coordinate system $(x,y,z)$ with unit vectors $a_{x}\:a_{y}$ and $a_{z}$ . A plane wave traveling in the region $z\geq 0$ with electric field vector $E=10\cos\left ( 2\times 10^{8}t\:+\:\beta z\right )a_{y}$ is incident normally on the plane at $z=0$ , where $\beta$ is the phase constant. The region $z\geq 0$ is in free …
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GATE EC 2003 Set 1 Q87 — Plane Waves and Properties

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