Which of the following parts of the electromagnetic spectrum has the lowest frequency

The part of the electromagnetic spectrum with the lowest frequency is gamma rays.

Explanation: Among the options provided, gamma rays actually have the highest frequency, while infrared waves have a lower frequency than visible light and ultraviolet waves. Therefore, the correct answer is infrared waves.

To understand better, the electromagnetic spectrum is arranged from low frequency (radio waves) to high frequency (gamma rays). As we move from radio waves to gamma rays, the frequency increases. Conversely, infrared waves fall on the lower frequency side of the spectrum.

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