Official PYQ · 2000Set 1 · Q2.21Plane Waves and PropertiesMCQ1 mark

GATE EC 2000 Set 1 Q2.21 — Plane Waves and Properties

A uniform plane wave in air impinges at $45^{\circ}$ angle on a lossless dielectric material with dielectric constant $\varepsilon_{r}$ . The transmitted wave propagates in a $30^{\circ}$ direction with respect to the normal. The value of $\varepsilon_{r}$ 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 2000 Set 1 Q2.21 — Plane Waves and Properties

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