A plane EM wave is propagating along x direction. It has a wavelength of 4 ~mm. If electric field is in y direction with the maximum magnitude of 60 ~Vm⁻¹, the equation for magnetic field is:

(B) B z =2 × 10⁻⁷ sin [(π)/2 × 10³(x-3 × 10⁸ t)] k T

(A) B z =2 × 10⁻⁷ sin [(π)/2(x-3 × 10⁸ t)] k T

(C) B z =60 sin [(π)/2(x-3 × 10⁸ t)] k T

(D) B x =60 sin [(π)/2(x-3 × 10⁸ t)] i T

Electromagnetic Waves: JEE Main 2024 Physics question

JEE Main 2024 · 9 Apr, Morning shift · Q6826

JEE Main 20249 Apr, Morning shiftPhysicsHardElectromagnetic Waves120× since 2002

A plane EM wave is propagating along

x

direction. It has a wavelength of

4 \mathrm{~mm}

. If electric field is in

y

direction with the maximum magnitude of

60 \mathrm{~Vm}^{-1}

, the equation for magnetic field is :