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The electric field of a plane electromag...

The electric field of a plane electromagnetic wave in vacuum is represented by
`E_(x)=0, E_(y)=0.5 cos[2pi xx10^(8) (t-x//c)] " and " E_(z)=0`.
Determine the wavelength of the wave.

A

4 m

B

5 m

C

3 m

D

6 m

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