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PhysicsJEE Main 4 Apr 2026, Shift 2·Q15·MCQ·Easy–moderate

Electromagnetic Waves · EM waves

A magnetic field vector in an electromagnetic wave is represented by, B⃗=B0sin⁡(2πνt−2πxλ)j^.\vec B = B_0\sin\left(2\pi\nu t - \frac{2\pi x}{\lambda}\right)\hat j. Its associated electric field vector is .
  1. (1)E⃗=−νλB0sin⁡(2πνt−2πxλ)k^\vec E = -\nu\lambda B_0\sin\left(2\pi\nu t - \dfrac{2\pi x}{\lambda}\right)\hat k
  2. (2)E⃗=−νλB0sin⁡(2πνt−2πxλ)i^\vec E = -\nu\lambda B_0\sin\left(2\pi\nu t - \dfrac{2\pi x}{\lambda}\right)\hat i
  3. (3)E⃗=νλB0sin⁡(2πνt−2πxλ)k^\vec E = \nu\lambda B_0\sin\left(2\pi\nu t - \dfrac{2\pi x}{\lambda}\right)\hat k
  4. (4)E⃗=νλB0sin⁡(2πνt−2πxλ)i^\vec E = \nu\lambda B_0\sin\left(2\pi\nu t - \dfrac{2\pi x}{\lambda}\right)\hat i
We corrected a printing error in the original paper

Source printed the frequency as a Latin “v” (2πvt2\pi\mathrm{v}t, vλB0\mathrm{v}\lambda B_0) instead of ν\nu.

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