Official PYQ · 2002Set 1 · Q2.23Plane Waves and PropertiesMCQ1 mark

GATE EC 2002 Set 1 Q2.23 — Plane Waves and Properties

Distilled water at $25^{\circ} \mathrm{C}$ is characterized by $\sigma=1.7 \times 10^{-1} \mathrm{mho} / \mathrm{m}$ and $\epsilon=78 \; \epsilon_{0}$ at a frequency of $3 \; \mathrm{GHz}.$ Its loss tangent $\tan\delta$ is

$\left(\epsilon=10^{-9} /(36 \pi) \mathrm{F} / \mathrm{m}\right)$

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Answer: C

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Published 10 Oct 2026

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GATE EC 2002 Set 1 Q2.23 — Plane Waves and Properties

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