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Physics
Velocity of electromagnetic waves in vacuum is given by
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Q. Velocity of electromagnetic waves in vacuum is given by
Chhattisgarh PMT
Chhattisgarh PMT 2010
A
$ \sqrt{\mu _{0}\varepsilon _{0}} $
B
$ \frac{\sqrt{\mu _{0}}}{\varepsilon _{0}} $
C
$ \frac{\sqrt{\varepsilon _{0}}}{\mu _{0}} $
D
$ \frac{1}{\sqrt{\mu _{0}}{\varepsilon }_{0}} $
Solution:
The velocity of electromagnetic waves in free space is given by
$c=\frac{1}{\sqrt{\mu_{0} \varepsilon_{0}}}=3 \times 10^{8} ms ^{-1}$