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JEE Main 202120 JulyEvening Shift
Exam
JEE Main
Year
2021
Date
20 July
Shift
Evening Shift
Subject
Physics
Chapter
Electromagnetic Waves

JEE Main 2021 · 20 July · Evening Shift · Physics · Electromagnetic Waves

In an electromagnetic wave, the electric field vector and magnetic...

In an electromagnetic wave, the electric field vector and magnetic field vector are given as \overset{\to}{E} = {E}_{0}\overset{^}{i} and \overset{\to}{B} = {B}_{0}\overset{^}{k}, respectively. The direction of
propagation of electromagnetic wave is along:

Options

  1. A( \overset{^}{k} )
  2. B\overset{^}{J}
  3. C( - \overset{^}{k} )
  4. D( - \overset{^}{j} )

Correct answer

D. ( - \overset{^}{j} )

Step-by-step solution

Direction of propagation = \overset{\to}{E} \times \overset{\to}{B} = \overset{^}{i} \times \overset{^}{k} = - \overset{^}{j}.
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