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What are electromagnetic waves ? Write t...

What are electromagnetic waves ? Write the expression for the velocity of electromagnetic waves in terms of permittivity and magnetic permeability of free space.

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Waves radiated by accelerated charges and consist of time varying, transverse electric and magnetic fields are called electromagnetic waves.
`C=(1)/( sqrt(mu_0 epis_0))`
Where .C.is velocity of light
`mu_0` permeability of free space
`epsi_0` permittivity of free space
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