A plane electromagnetic wave travels in dielectric medium of relative – McqOptions

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1.	A plane electromagnetic wave travels in dielectric medium of relative permittivity 9. Relative to free space, the velocity of propagation in the dielectric is
A.	increased by a factor of 9
B.	increased by a factor of 3
C.	unchanged
D.	reduced by a factor of 1/3
Answer» E.

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