At low frequencies, the dielectric constant of of a medium is6. The speed of lig

Question

At low frequencies, the dielectric constant of of a medium is6. The speed of light is 2.998 x 108 m/s. Find the speedof low-frequency radio waves in the medium. At low frequencies,n˜k. Answer in units of m/s. I tried using the formula forelectromagnetic waves, v=1/(k)(4 x10-7)(8.85 x 10-12), but got a wrong answer.Any help? At low frequencies, the dielectric constant of of a medium is6. The speed of light is 2.998 x 108 m/s. Find the speedof low-frequency radio waves in the medium. At low frequencies,n˜k. Answer in units of m/s. I tried using the formula forelectromagnetic waves, v=1/(k)(4 x10-7)(8.85 x 10-12), but got a wrong answer.Any help?

Explanation / Answer

   Speed of rf wave in medium of refractiveindexn   v   =   c /n   =   c / k    v   =   2.998* 108 /6   =   1.224 *108   m/s

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