Question

question 14 (multiple choice worth 5 points) (02 04r mc) compared to infrared radiation, an electromagnetic wave that has a lower frequency will also have a longer wavelength and lower speed shorter wavelength and lower speed shorter wavelength and equal speed longer wavelength and equal speed

Explanation:

Step1: Recall wave - speed formula

The speed of an electromagnetic wave is given by $c = \lambda f$, where $c$ is the speed of light (constant in a vacuum), $\lambda$ is the wavelength, and $f$ is the frequency.

Step2: Analyze the relationship between wavelength and frequency

Since $c$ is constant, when $f$ decreases, $\lambda=\frac{c}{f}$ increases. And all electromagnetic waves travel at the speed of light $c$ in a vacuum. So, a lower - frequency electromagnetic wave compared to infrared radiation has a longer wavelength and the same speed.

Answer:

D. longer wavelength and equal speed