Electromagnetic Spectrum Wavelength Ordering

This solution arranges the given electromagnetic spectrum bands in ascending order of their wavelength.

Wavelength Order Explained

The electromagnetic (EM) spectrum includes various forms of radiation, each characterized by its wavelength ($\lambda$) and frequency ($f$). These two properties are inversely related: as wavelength increases, frequency decreases ($\lambda \propto 1/f$). Energy is directly related to frequency. Therefore, arranging bands by ascending wavelength means ordering them from shortest wavelength (highest frequency/energy) to longest wavelength (lowest frequency/energy).

EM Spectrum Bands Provided

The specific bands mentioned in the question are:

• A. X - rays
• B. Near Infrared rays
• C. Microwaves
• D. Visible Rays
• E. Radio waves

Wavelength Ascending Order

The established order of these electromagnetic spectrum bands, from shortest wavelength to longest wavelength, is:

1. X - rays (A): Possess very short wavelengths.
2. Visible Rays (D): A narrow band of wavelengths humans can see (approx. 400 nm to 700 nm).
3. Near Infrared rays (B): Wavelengths are longer than visible light.
4. Microwaves (C): Wavelengths are longer than infrared radiation.
5. Radio waves (E): Have the longest wavelengths in the EM spectrum.

Arrangement Conclusion

Based on the ascending order of wavelength, the correct sequence of the given labels (A, B, C, D, E) is:

A, D, B, C, E