A radio wave has a wavelength of 1.0 km. What is the radio frequency?
0.30 MHz
300 KHz
3.0 MHz
30 KHz
See your other post above. Answered by Bob Pursley.
mhz
do your math
To determine the radio frequency of a wave, you can use the relationship between wavelength and frequency.
The formula to calculate frequency is:
Frequency = Speed of light / Wavelength
The speed of light in a vacuum is approximately 3 x 10^8 meters per second.
First, convert the wavelength from kilometers to meters:
1.0 km = 1.0 x 10^3 meters
Now, we can substitute the values into the formula:
Frequency = (3 x 10^8 m/s) / (1.0 x 10^3 m)
The meters unit cancels out, and we are left with:
Frequency = 3 x 10^5 Hz
Since 1 Hz is equivalent to 1 cycle per second, we can say that the frequency is:
300 KHz (kilohertz)