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8.Electromagnetic waves
easy
Light wave is travelling along $y-$ direction. If the corresponding $\vec E$ vector at any time is along the $x-$ axis, the direction of $\vec B$ vector at that time is along

A
$y-$ axis
B
$x-$ axis
C
$+z -$ axis
D
$-\,z-$ axis
Solution
Light wave is an electromagnetic wave in which $\vec E$ and $\vec B$ are at right angles to each other as well as at right angles to the direction of wave propagation.
Standard 12
Physics