The skin-depth of copper at a frequency of 3 GHz is 1 micron. At 12 GHz, for a non-magnetic conductor whose conductivity is times of copper, the skin depth would be :

• A. <span class="root">9 x 4</span>
• B. m
• C. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/12-03-34-2.png">
• D. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/12-03-34-3.png">
• E. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/12-03-34-4.png">