Name any four regions of electromagnetic spectrum in increasing order of frequency.

Explanation

To answer the question about the four regions of the electromagnetic spectrum in increasing order of frequency, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Electromagnetic Spectrum**: The electromagnetic spectrum consists of various regions that are categorized based on their frequency and wavelength. The frequency of electromagnetic waves increases as you move from one region to another.

2. **Identify the Regions**: The regions of the electromagnetic spectrum include:
- Radio Waves
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