Multiple choice

The depth of penetration of electromagnetic wave in a medium having conductivity $\sigma$ at a frequency of 1 MHz is 25 cm. The depth of penetration at a frequency of 4 MHz will be

  1. 6.25 cm

  2. 12.50 cm

  3. 50.00 cm

  4. 100.00 cm

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation