Question

if the wavelength of an infrared wave gets longer, which type of electromagnetic radiation could it become?

○ x-ray

○ gamma

○ microwave

○ visible

Explanation:

The electromagnetic spectrum is ordered by wavelength (from longest to shortest): radio waves, microwaves, infrared, visible, ultraviolet, X - rays, gamma rays. When the wavelength of an infrared wave gets longer, it moves towards the region with longer wavelengths. Among the options, X - ray and gamma have shorter wavelengths than infrared, visible has a shorter wavelength than infrared (when moving towards longer, infrared to visible is shorter wavelength direction), while microwave has a longer wavelength than infrared. So as infrared wavelength gets longer, it can become microwave.

Answer:

Microwave (the option: Microwave)