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GATE ECE 1999 | Question 2.22

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In a twin-wire transmission line in air, the adjacent voltage maxima are at $12.5 \mathrm{~cm}$ and $27.5 \mathrm{~cm}$. The operating frequency is

  1. $300 \; \mathrm{MHz}$
  2. $1 \; \mathrm{GHz}$
  3. $2 \; \mathrm{GHz}$
  4. $6.28 \; \mathrm{GHz}$

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