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The electric field of uniform plane wave is given by E = 20 sin (2 p x 10⁸t- pz) _x + 20 cos (2 p x 10⁸t - pz) _y. Find phase velocity

2 x 10⁸ m/s

p x 10⁸ m/s

2p x 10⁸ m/s

none of these

Answer : Option A

Explanation :

= 2 x 10⁸ m/s.

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