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Electromagnetic Waves question

2011 · Q130
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Electromagnetic Waves question

2011 · Q130

NEETPhysicsElectromagnetic WavesMCQ+4 / −1
The electric and the magnetic field, associated with an e.m. wave, propagating along the +z-axis, can be represented by
  1. A
    [E→=E0i^,B→=B0j^]\left[ {\overrightarrow E = {E_0}\widehat i,\overrightarrow B = {B_0}\widehat j} \right][E=E0​i,B=B0​j​]
  2. B
    [E→=E0k^,B→=B0i^]\left[ {\overrightarrow E = {E_0}\widehat k,\overrightarrow B = {B_0}\widehat i} \right][E=E0​k,B=B0​i]
  3. C
    [E→=E0j^,B→=B0i^]\left[ {\overrightarrow E = {E_0}\widehat j,\overrightarrow B = {B_0}\widehat i} \right][E=E0​j​,B=B0​i]
  4. D
    [E→=E0j^,B→=B0k^]\left[ {\overrightarrow E = {E_0}\widehat j,\overrightarrow B = {B_0}\widehat k} \right][E=E0​j​,B=B0​k]
View written solutionFree

Correct answer: A

The e.m. wave is propagating along +z direction.

Electric field and magnetic field are mutually perpendicular and also perpendicular to the direction of propagation.

∴\therefore∴ [E→=E0i^,B→=B0j^]\left[ {\overrightarrow E = {E_0}\widehat i,\overrightarrow B = {B_0}\widehat j} \right][E=E0​i,B=B0​j​]

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