Question

which two fields interact to produce an electromagnetic wave? electric and wavelength wavelength and frequency electric and magnetic visible and invisible

Explanation:

An electromagnetic wave is formed by the interaction of electric and magnetic fields. These fields oscillate perpendicular to each other and to the direction of wave propagation. Wavelength and frequency are properties of waves, not fields. Visible and invisible refer to types of electromagnetic waves (like visible light vs. infrared), not fields that produce the wave. Electric and wavelength also don't make sense as a pair to produce an electromagnetic wave.

Answer:

Electric and magnetic.