Name any four regions of electromagnetic spectrum (other than visible light) in increasing order of their wavelength.

Explanation

To answer the question about the four regions of the electromagnetic spectrum (other than visible light) in increasing order of their wavelength, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Regions of the Electromagnetic Spectrum**:
The electromagnetic spectrum consists of various regions categorized by their wavelengths. We need to select four regions that are not visible light.

2. **List the Regions in Order of Wavelength**:
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