# Electronics and Communication Engg - ECE

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GATE 2014   EC   Question No. 265

Assume that a plane wave in air with an electric field $\overrightarrow E=10\cos\left(\omega t-3x-\sqrt3z\right){\overset\frown a}_y\;V/m$ is incident on a non-magnetic dielectric slab of relative permittivity 3 which covers the region z > 0. The angle of transmission in the dielectric slab is ________ degrees.