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The velocity of electromagnetic waves in...

The velocity of electromagnetic waves in a dielectric medium `(in_(r)=4)` is

A

`3xx10^(8) metre//second`

B

`1.5xx10^(8) metre//second`

C

`6xx10^(8) metre//second`

D

`7.5xx10^(7) metre//second`

Text Solution

Verified by Experts

The correct Answer is:
D
`mu=(c)/(v) implies v=7.5xx10^(7)m//sec therefore (D)`
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