What is the frequency and energy of electromagnetic radiation with a wavelength of #"1.22 km"#?
1 Answer
Explanation:
There are two parts to this question. The first part determines what the frequency will be. The second part determines what the energy will be.
Part 1: Determining Frequency
The speed of light is directly proportional to wavelength and frequency.
The speed of light
Since
Now we're reading to determine the frequency.
Known/Given
Unknown
Solution
Rearrange the equation to isolate
Part 2: Determine the Energy
The energy in a photon is determined by multiplying the frequency by Planck's constant. Planck's constant,
The equation for determining the energy of a photon is shown below.
Substitute the known values into the equation and solve.