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  • Question

  • The Depth of penetration of EM wave in medium having conductivity ? at a frequency of 1 MHz is 25 cm. The depth of penetration at a frequency of 4 MHz will be


  • Options
  • A. 6.25 cm
  • B. 12.50 cm
  • C. 50 cm
  • D. 100 cm

  • Correct Answer
  • 12.50 cm 

    Explanation
    Skin depth The Depth of penetration of EM wave in medium having conductivity ? at a frequency of 1 MHz is 25 cm

    The Depth of penetration of EM wave in medium having conductivity ? at a frequency of 1 MHz is 25 cm

    ⟹ ?2 = ?1/2 .

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