CUET Preparation Today
The speed of an electromagnetic wave in a medium of dielectric constant 2.25 and relative permeability 4 is: |
$3×10^8ms^{-1}$ $9×10^8ms^{-1}$ $10^8ms^{-1}$ $1.33×10^8ms^{-1}$ |
$10^8ms^{-1}$ |
The correct answer is Option (3) → $10^8ms^{-1}$ |
