An air-filled rectangular waveguide has dimensions 8cm x 10cm . The phase velocity of guided wave at frequency of 3 GHz for TE10 mode is

• 1.5 x 108 m/s
• 5.5 x 108 m/s
• 3.46 x 108 m/s
• 0.18 x 107 m/s

Correct Answer: 3.46 x 108 m/s

Explanation:

∴ V_P = 3.46 x 10⁸ m/s.