Official PYQ · 2005Set 1 · Q28Plane Waves and PropertiesMCQ1 mark

GATE EC 2005 Set 1 Q28 — Plane Waves and Properties

The magnetic field intensity vector of a plane wave is given by
$\overline{\mathrm{H}}(x, y, z, t)=10 \sin \left(50000 t+0.004 x+30 \; \hat{a}_{y}\right)$ ,
where $\hat{a}_{y}$ denotes the unit vector in $y$ direction.
The wave is propagating with a phase velocity

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Answer: C

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Published 10 Oct 2026

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GATE EC 2005 Set 1 Q28 — Plane Waves and Properties

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