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