In a plane electromagnetic wave, the directionsof electric field and magnetic field arerepresented by \stackrel{\^}{{k}} and 2\stackrel{\^}{{i}}-2 \stackrel{\^}{{j}}, respectively. What is the unit vector along direction of propagation of the wave. [2 Sep 2020 Shift 2]

Correct Answer is : 1√2(^i+^j)

{1}/{\\sqrt{2}(\stackrel{\^}{{i}}+\stackrel{\^}{{j}})

{1}/{\\sqrt{5}(\stackrel{\^}{{i}}+\stackrel{\^}{2{j}})

{1}/{\\sqrt{5}(\stackrel{\^}{2{i}}+\stackrel{\^}{{j}})

{1}/{\\sqrt{2}(\stackrel{\^}{{j}}+\stackrel{\^}{{k}})

JEE Mains 02-Sep-2020 Shift 2 Solved Paper

Section: Physics

Question : 19 of 75

Marks: +1, -0

In a plane electromagnetic wave, the directionsof electric field and magnetic field arerepresented by

and 2

−2

, respectively.
What is the unit vector along direction of propagation of the wave.

[2 Sep 2020 Shift 2]

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