The electric field associated with an e.m. wave in vacuum is given by \overrightarrow{E}=\hat{i} 40 \cos (k z-6 \times 10^s t), where E, z and t are in volt\/m, meter and seconds respectively. The value of wave vector k is :

AIPMT 2012 Physics and Chemistry Paper

Question : 46 of 100

Marks: +1, -0

The electric field associated with an e.m. wave in vacuum is given by

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40‌cos(kz−6×10st), where E, z and t are in volt\/m, meter and seconds respectively. The value of wave vector k is :

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