CUET Preparation Today
For a medium with permittivity (ε) and permeability (μ), the speed of light (v) is given by: |
$v=\sqrt{\frac{μ}{ε}}$ $v=\sqrt{με}$ $v=\sqrt{\frac{1}{με}}$ $v=\sqrt{\frac{ε}{μ}}$ |
$v=\sqrt{\frac{1}{με}}$ |
The correct answer is Option (3) → $v=\sqrt{\frac{1}{με}}$ The speed of a light in a given medium with permitivity (ε) and permeability (μ) is - $v=\frac{1}{\sqrt{εμ}}$ $∴c=\frac{1}{\sqrt{ε_0μ_0}}≃3×10^8m/s$ |
