Electromagnetic Spectrum

To determine the order of wavelengths from shortest to longest for the given types of electromagnetic waves, we need to first understand the general spectrum of electromagnetic radiation. The electromagnetic spectrum, ordered from shortest wavelength to longest, is as follows:

• Gamma rays
• X-rays
• Ultraviolet (not part of the question, but included for context)
• Visible light (not part of the question, but included for context)
• Infrared waves
• Microwaves
• Radio waves (not part of the question, but included for context)

Based on this electromagnetic spectrum, we can arrange the given electromagnetic waves in the order of increasing wavelength:

1. Gamma rays ( )
2. X-rays ( )
3. Infrared waves ( )
4. Microwaves ( )

This sequence corresponds to the option:

Hence, the correct answer is: