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electronics and communication engineering electromagnetic field theory
1. The Depth of penetration of EM wave in medium having conductivity σ at a frequency of 1 MHz is 25 cm. The depth of penetration at a frequency of 4 MHz will be
(A): 100 cm
(B): 12.50 cm
(C): 50 cm
(D): 6.25 cm
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By: guest on 02 Jun 2017 12.49 am
Skin depth δ2 = δ1/2 .
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