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

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].	6.25 cm
[B].	12.50 cm
[C].	50 cm
[D].	100 cm

Answer: Option B

Explanation:

Skin depth 214-214-1

214-214-2

1-sym-imp δ₂ = δ₁/2 .

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