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electronics and communication engineering electromagnetic field theory
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 3
(B): increased by a factor of 9
(C): reduced by a factor of 1/3
(D): unchanged
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By: guest on 02 Jun 2017 12.49 am
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