Question Bank NAT • 2 Marks Section 3: Electromagnetic Theory Waveguides and radiation

QB_PH_066: Waveguides and radiation

Question Statement

For a rectangular waveguide of dimensions $a = 3\text{ cm}$ and $b = 2\text{ cm}$, the cutoff frequency for the dominant $TE_{10}$ mode in GHz is:
Correct Answer
5, 5
Verified Key

Step-by-Step KaTeX Derivation & Detailed Explanation

### Solution: $f_{c, 10} = c / (2a) = (3 \times 10^{10}) / (2 \times 3) = 5\text{ GHz}$.
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