Question:medium

A TEM wave impinges obliquely on a dielectric-dielectric boundary with \(\epsilon_{r1}=2\) and \(\epsilon_{r2}=1\). The angle of incidence for total reflection is :

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For dielectric media: \[ \sin\theta_c=\sqrt{\frac{\epsilon_{r2}}{\epsilon_{r1}}} \] Total internal reflection occurs only when: \[ \epsilon_{r1}>\epsilon_{r2} \]
Updated On: May 22, 2026
  • \(30^\circ\)
  • \(60^\circ\)
  • \(45^\circ\)
  • \(90^\circ\)
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The Correct Option is C

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