Which of the following has lowest frequency? Gamma rays, Radio waves, Infrared rays

Explanation

To determine which of the given electromagnetic waves has the lowest frequency, we will analyze the frequency ranges of gamma rays, radio waves, and infrared rays.

### Step-by-Step Solution:

1. **Identify the frequency ranges of each type of electromagnetic wave:**
- **Gamma rays:** The frequency of gamma rays is greater than \(10^{19}\) Hz.
- **Infrared rays:** The frequency of infrared rays ranges from about 300 GHz to 400 THz, which is equivalent to \(3 \times 10^{11}\) Hz to \(4 \times 10^{14}\) Hz.
- **Radio waves:** The frequency of radio waves ranges from 30 Hz to 300 GHz, which is equivalent to \(3 \times 10^{1}\) Hz to \(3 \times 10^{11}\) Hz.
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