JEE Mains · Physics · STD 12 - 8. Electromagnetic waves
If an optical medium possesses a relative permeability of \(\frac{10}{\pi}\) and relative permittivity of \(\frac{1}{0.0885}\), then the velocity of light is greater in vacuum than that in this medium by ________ times.
\(\left(\mu_0=4 \pi \times 10^{-7} \mathrm{H} / \mathrm{m}, \epsilon_0=8.85 \times 10^{-12} \mathrm{~F} / \mathrm{m}\right.\)
\(\left.\mathrm{c}=3 \times 10^8 \mathrm{~m} / \mathrm{s}\right)\)
- A 12
- B 6
- C 18
- D 24
Answer & Solution
Correct Answer
(B) 6
Step-by-step Solution
Detailed explanation
Since velocity of light in terms of \(\mu \& E\) is…
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