For a plane electromagnetic wave propagating in x -direction, which one of the following combinations gives the correct possible directions for the electric field ( E ) and magnetic field ( B ) respec

Question

For a plane electromagnetic wave propagating in x -direction, which one of the following combinations gives the correct possible directions for the electric field ( E ) and magnetic field ( B ) respectively?NEET 2021

TestHub · Accepted Answer

Direction = E → × B → (i) ( j ^ + k ^ ) × ( j ^ + k ^ ) = 0 (ii) ( - j ^ + k ^ ) × ( - j ^ - k ^ ) = 0 + ı ^ - ( - ı ^ ) + 0 = 2 ı ^ (iii) ( j ^ + k ^ ) × ( - j ^ - k ^ ) = 0 (iv) ( - j ^ + k ^ ) × ( - j ^ + k ^ ) = 0

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