Question

which of these types of electromagnetic radiation has the lowest frequency? select all the correct answers. the electromagnetic spectrum wavelength (meters) radio 10³ microwave 10⁻² infrared 10⁻⁵ visible 10⁻⁶ ultraviolet 10⁻⁸ x - ray 10⁻¹⁰ gamma ray 10⁻¹²

Explanation:

Step1: Recall the relationship between frequency and wavelength

The speed of light $c$ is related to frequency $f$ and wavelength $\lambda$ by $c = f\lambda$. Since $c$ is a constant, frequency and wavelength are inversely - proportional ($f=\frac{c}{\lambda}$).

Step2: Identify the type of EM - radiation with the longest wavelength

From the electromagnetic spectrum shown, radio waves have the longest wavelength among the given types of electromagnetic radiation.

Step3: Determine the type of EM - radiation with the lowest frequency

Since frequency and wavelength are inversely proportional, the type of electromagnetic radiation with the longest wavelength has the lowest frequency. So, radio waves have the lowest frequency.

Answer:

Radio