Question

what is the wavelength of an electromagnetic wave that travels at 3 x 10^8 m/s and has a frequency of 60 mhz? (1 mhz = 1,000,000 hz)
o 60 mhz x 300,000,000 m/s
o no answer can be determined from the information given.

Explanation:

Step1: Convert frequency to Hz

Given frequency $f = 60\ MHz=60\times10^{6}\ Hz$.

Step2: Use wave - speed formula

The wave - speed formula is $v = f\lambda$, where $v$ is the speed of the wave, $f$ is the frequency, and $\lambda$ is the wavelength. We can solve for $\lambda$: $\lambda=\frac{v}{f}$. Here, $v = 3\times 10^{8}\ m/s$ and $f = 60\times 10^{6}\ Hz$. So $\lambda=\frac{3\times 10^{8}\ m/s}{60\times 10^{6}\ Hz}$.

Answer:

The correct expression for the wavelength is $\frac{300000000\ m/s}{60000000\ Hz}$ (the last option among the visible ones in the image, though the formatting in the image is a bit unclear).