Which is the correct expression of velocity of light?
Which is the correct expression of velocity of light?
A. `(1)/(sqrt(epsi_(0)mu_(0)))`
B. `(E_(0))/(B_(0))`
C. `(c)/(mu)`
D. All of these
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Correct Answer - D
The velocity of electromagnetic waves in free space is given by
`c = (1)/(sqrt(mu_(0)epsi_(0))) = (E_(0))/(B_(0)) = 3 xx 10^(8) ms^(-1)`
Moreover, velocity of light in a medium with refractive index `mu` is, `v = (c)/(mu)`.
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