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The electric field associted with an ele...

The electric field associted with an electromagnetic wave in vacuum is given by `vecE=hati 40 cos(kz=6xx10^(8)t)`, when `E`, `z` and `t` are in volt/m metre and second respectively
find the wave vector.

A

`6 m^(-1)`

B

`3 m^(-1)`

C

`2 m^(-1)`

D

`0.5 m^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Speed of = `("coefficient of" t)/("Coefficient of" x)`
`3 xx 10^(8) = (6 xx 10^(8))/k implies k = 2` .
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