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Physics
The speed of light is vacuum is equal to
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Q. The speed of light is vacuum is equal to
KEAM
KEAM 2017
A
$\frac{1}{\sqrt{\mu_0 \varepsilon_0}}$
100%
B
$\mu_0^2 \varepsilon_0^2$
0%
C
$\sqrt{\mu_0 \varepsilon_0}$
0%
D
$\frac{1}{\sqrt{\mu_{0} \varepsilon_{0}}}$
0%
E
${\mu_0 \varepsilon_0}$
0%
Solution:
The speed of light in the vaccum is given by the formula
$C=\frac{1}{\sqrt{\mu_{0} \varepsilon_{0}}}$
where, $\mu_{0}=$ permeability of vacuum or air
$\varepsilon_{0}=$ permittivity of air.