What is the frequency (MHz) of this electromagnetic radiation?

Question

Ham radio operators often broadcast on the 6.0 meter band. what is the frequency (MHz) of this electromagnetic radiation?
a) 500 MHz
b) 200 MHz
c) 50 MHz
d) 20 MHz
e) 2.0 MHz

How should I go about solving this problem and ones similar to it?

Answer 1

This question involves converting between frequency and wavelength.



The important equation for this is: c = fw

c = speed of light = 300000000 m/s = 3.0x10^8 m/s

f = frequency

w = wavelength (generally lambda is used)



So for this question, c is of course a constant, w is 6.0m, and f is what you are trying to find:



f = c/w

f = 3.0x10^8m/s / 6.0m

f = 5.0x10^7s^-1



Since the answers are in megahertz, you need to convert f from hertz (Hz), which it is in right now, to megahertz (MHz). 1MHz = 1x10^6Hz, so

f = 50MHz



The process is very similar if you want to find the wavelength from the frequency... just rearrange the formula to: w = c/f



This is all assuming electromagnetic radiation (c=speed of light) in a vacuum.

Answer 2

Frequency is the inverse of the wavelength, and vice versa. A Hertz is the unit of frequency, and it ability a revolution of a million according to 2nd. to that end, 10 Hertz ability the wave has ten wavelengths according to 2nd. in case you calculate how far it traveled in a single 2nd, and divide that by making use of the frequency, you will get the wavelength. additionally, electromagnetic radiation propagates on the cost of sunshine, extra or less 3*10^8 m/s. be conscious: this could supply your answer in meters.

Answer 3

Wavelength in Meters = 300 / Frequency in MHz



LIKEWISE,



Frequency in MHz = 300 / Wavelength in Meters



So, the 6.0 meter band is located at 50 MHz.



WK