The magnetic field intensity vector of a plane wave is given by (x, y, – McqOptions

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1.	The magnetic field intensity vector of a plane wave is given by (x, y, z, t) = 10 sin (5000t + 0.004x + 30 ), where denotes unit vector in y direction the wave is propagating with a phase velocity.
A.	5 x 104 m/sec
B.	-3 x 108 m/sec
C.	-1.25 x 107 m/sec
D.	3 x 108 m/sec
Answer» D. 3 x 108 m/sec

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