The region between a pin of parallel perfectly conducting planes of infinite extent is y and z directions is partially filled with a dielectric as shown below.A 30 GHz TE10 wave is incident on the air-dielectric interface. The value of reflection coefficient at the interface is

• A. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/12-03-42-1.png">
• B. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/12-03-42-2.png">
• C. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/12-03-42-3.png">
• D. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/12-03-42-4.png">