A plane EM wave is travelling in an unbound loss less dielectric havin – McqOptions

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1.	A plane EM wave is travelling in an unbound loss less dielectric having Œºy = 1 and Œµy = 4, the time average Poynting vector of the wave is 5 W/m3 . The phase velocity vp (assuming velocity of light as 3 x 108 m/sec) is
A.	1.5 x 108 m/sec
B.	3 x 108 m/sec
C.	2.5 x 108 m/sec
D.	0.5 x 108 m/sec
Answer» B. 3 x 108 m/sec

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