NEET 2018 Physics question

PhysicsElectromagnetic WavesNEET 2018

An em wave is propagating in a medium with a velocity . The instantaneous oscillating electric field of this em wave is along axis. Then the direction of oscillating magnetic field of the em wave will be along

Answer: (2)

Solution

In an electromagnetic wave , and the direction of propagation are mutually perpendicular and points along . Here and . We need . Since

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Question ID VK-092212