Question

directions: answer the question about wavelength

a wave completes two wave cycles over a distances of 420 nanometers. what is the wavelength of the wave?

blank nanometers

Explanation:

Step1: Recall wavelength formula

Wavelength ($\lambda$) is the distance per cycle. So if $n$ cycles cover distance $d$, $\lambda=\frac{d}{n}$.
Here, $d = 420$ nm, $n = 2$.

Step2: Calculate wavelength

Substitute values: $\lambda=\frac{420}{2}=210$ nm.

Answer:

210