If electric permittivity and magnetic permeability of the medium are respectively and , then the velocity (Cm) of the electromagnetic wave in the medium is given by___________________?

If electric permittivity and magnetic permeability of the medium are r

1.	If electric permittivity and magnetic permeability of the medium are respectively and , then the velocity (Cm) of the electromagnetic wave in the medium is given by___________________?
A.	Cm = 1/εμ
B.	Cm = 1/√8 μ
C.	Cm = 5/√εμ
D.	None of these
Answer» C. Cm = 5/√εμ

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If electric permittivity and magnetic permeability of the medium are respectively and , then the velocity (Cm) of the electromagnetic wave in the medium is given by___________________?

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