In a twin wire transmission line in air the adjacent voltage

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In a twin wire transmission line in air the adjacent voltage maxima are at 12.5 cm and 27.5 cm. The operating frequency is—

1. 300 MHz
2. 1 GHz
3. 2 GHz
4. 6.28 GHz

Correct Option: C

Wavelength of the wave is
λ = V_{max 1} – V_{max 2}
= (27.5 – 12.5) cm = 0.15 m

f =	c	⇒	3 × 10⁸	= 2 GHz
	λ		.15