Verified Solution • 2025–26 Session moderate

QNEET-2021-Ph-613: NEET 2021 Physics - Class 12 NEET-2021-Ph-613 Solution: For a plane electromagnetic wave propagating in x-direction…

For a plane electromagnetic wave propagating in x-direction which one of the following combination gives the correct possible directions for electric field (E) and magnetic field (B) respectively? −j^+k^−j^+k^-\hat{j} + \hat{k} -\hat{j} + \hat{k} j^+k^j^+k^\hat{j} + \hat{k} \hat{j} + \hat{k} −j^+k^−j^−k^-\hat{j} + \hat{k} -\hat{j} - \hat{k} j^+k^−j^−k^\hat{j} + \hat{k} -\hat{j} - \hat{k}

Multiple Choice Options

  • A −j^+k^,−j^+k^- \widehat j + \widehat k, - \widehat j + \widehat k _ j _ + k , _ j _ + k
  • B j^+k^,j^+k^\widehat j + \widehat k, \widehat j + \widehat k j _ + k , j _ + k
  • C −j^+k^,−j^−k^- \widehat j + \widehat k, - \widehat j - \widehat k _ j _ + k , _ j _ _ k
  • D j^+k^,−j^−k^\widehat j + \widehat k, - \widehat j - \widehat k j _ + k , _ j _ _ k

Step-by-Step Verified Solution

Wave in x direction C = E _ _ B _ ( _ j ^ + k ^ ) _ ( _ j ^ _ k ^ ) = i ^ + i ^ = 2 i ^

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