# An air-filled waveguide has dimension 3 cm x 2.5 cm. The guide is 4 cm long. It is shorted at each end, forming a cavity. Determine the lowest three resonance frequency.

An air-filled waveguide has dimension 3 cm x 2.5 cm. The guide is 4 cm long. It is shorted at each end, forming a cavity. Determine the lowest three resonance frequency.

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**12**Section: Problems

Problem: 44

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