Arrange the following electromagnetic radiations in increasing order of their wavelengths : micro-waves, X-rays, infrared radiations, Y-rays, radio waves and ultraviolet rays.

Explanation

To arrange the given electromagnetic radiations in increasing order of their wavelengths, we need to understand the relationship between frequency and wavelength in the electromagnetic spectrum. The electromagnetic spectrum is typically arranged from the shortest wavelength (highest frequency) to the longest wavelength (lowest frequency).

1. **Identify the types of electromagnetic radiations**:
- Gamma rays (Y-rays)
- X-rays
- Ultraviolet rays
- Infrared radiations
- Microwaves
...