The relative permittivity... | Electromagnetic Waves JEE Main 2021

JEE MAIN 2021

27-07-21 S1

Question

The relative permittivity of distilled water is 81 . The velocity of light in it will be : (Given $\left.\mu_r=1\right)$

Select the correct option:

$4.33 \times 10^7 \mathrm{~m} / \mathrm{s}$

$2.33 \times 10^7 \mathrm{~m} / \mathrm{s}$

$3.33 \times 10^7 \mathrm{~m} / \mathrm{s}$

$5.33 \times 10^7 \mathrm{~m} / \mathrm{s}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$V=\frac{c}{\sqrt{\mu_r \varepsilon_r}}=3.33 \times 10^7 \mathrm{~m} / \mathrm{sec}$

Question Tags

JEE Main

Physics

Easy

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