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JEE Main 2018 Physics question

PhysicsElectromagnetic WavesJEE Main 2018

A plane polarized monochromatic EM wave is traveling a vacuum along z direction such that at it is found that the electric field is zero at a spatial point . The next zero that occurs in its neighbourhood is at . The frequency of the electromagnetic wave is -

Answer: (C)

Solution

Successive zeros of E are half a wavelength apart, so and $ν

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Question ID VK-009659