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An electromagnetic wave travels in a med...

An electromagnetic wave travels in a medium with speed `2xx10^(2)` m/s. If relative permeability of medium is `1.0` then releative permitivity is

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`C’=(1)/(sqrt(muC))=(1)/(sqrt(mu_(0)mu_(r)epsilon_(0)epsilon_(r)))=(C)/sqrt(mu_(r)epsilon_(r))`
`epsilon_(r)=(C^(2))/(C.^(2)mu_(r))=((3)/(2))^(2)=2.25`.
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