Electromagnetic waves are transverse waves that move through space at the speed

Question

Electromagnetic waves are transverse waves that move through space at the speed of light. They medium and are sustained by (a) time varying electric and magnetic fields that oscillate perpendicular to each other and to the direction of propagation. (b) time varying and magnetic fields that oscillate parallel to each other but perpendicular to the direction of propagation. (c) time varying electric and magnetic fields that oscillate perpendicular to each other and move in the direction of the electric field. (d) time varying electric and magnetic fields that oscillate parallel to each other and move in the direction of the electric field. (e) time varying electric and magnetic fields that oscillate parallel to each other and move in the direction of the magnetic field.

Explanation / Answer

EM Waves are sustained by the time varying magnetic and electric field which are perpendicular to each other and to the direction of propogation.

Hence correct option: a).

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