Q. Light wave is travelling along $y$-direction. If the corresponding E vector at any time is along the $x$-axis, the direction of B vector at that time is along

A) $y$-axis
B) $x$- axis
C) $+ z$- axis
D) $- z$- axis
Explanation

(c) The given wave in an Electromagnetic Waves. Electromagnetic radiation is a self propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of propagation.
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Hence, B is along the $z$-axis at that time.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.