Question

Electromagnetic waves travelling in a medium having

relative permeability μr = 1.2 and relative permittivity Er = 0.012. The speed of electromagnetic waves in medium must be

A 1.44 × 10^5 m/s

B 1.44 × 10^6 m/s

C 1.44 × 10^8 m/s

D 1.44 × 10^9 m/s

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