Physics · Electromagnetic Theory
A metallic waveguide of square cross-section of side L is excited by an electromagnetic wave of wave-number k. The group velocity of the TE11 mode is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1kL / √ k 2 L 2 + 2π 2✓
- 2(c / kL) √ k 2 L 2 - π 2
- 3(c / kL) √ k 2 L 2 - 2π 2
- 4ckL / √ k 2 L 2 + π 2
Correct answer
kL / √ k 2 L 2 + 2π 2
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