Question

Infrared radiations are produced when a changing electric field creates a

longitudinal wave parallel to it
longitudinal wave perpendicular to it
changing magnetic field parallel to it
changing magnetic field perpendicular to it

Answer 1

The last answer is correct. The infrared radiation is one of electromagnetic radiation's type, which means that changing electric field creates perpendicular changing magnetic field.

Answer 2

Option (d)

Step-by-step explanation:

When an oscillating electric and magnetic fields interacts each other perpendicularly then electromagnetic radiations are produced.

Here the changing magnetic field is created perpendicular to electric field