radio stations use electromagnetic waves for broadcasting. the chart shows different frequencies of waves…
radio stations use electromagnetic waves for broadcasting. the chart shows different frequencies of waves used by radio stations. which radio station has the wave with the longest wavelength?\n| radio station | frequency (mhz) |\n| ---- | ---- |\n| w | 88 |\n| x | 95 |\n| y | 90 |\n| z | 99 |\no w\no x\no y\no z
Answer
Explanation:
Step1: Recall the relationship between frequency and wavelength
The speed of light $c$ is constant, and $c = \lambda f$ (where $\lambda$ is wavelength and $f$ is frequency), so $\lambda=\frac{c}{f}$. This means wavelength and frequency are inversely - proportional.
Step2: Compare the frequencies
We have the frequencies of radio stations: $f_W = 88$ MHz, $f_X=95$ MHz, $f_Y = 90$ MHz, $f_Z=99$ MHz. The smallest frequency will have the longest wavelength. Since $88<90<95<99$, radio - station W has the smallest frequency.
Answer:
W