Question

the difference in energy between different forms of electromagnetic radiation is the result of changes in which two of the following? (select two)
wavelength
frequency
velocity
amplitude

Explanation:

The energy of electromagnetic radiation is given by the formula $E = h
u$, where $h$ is Planck's constant and $
u$ is frequency. Also, $
u=\frac{c}{\lambda}$, where $c$ is the speed of light (constant for electromagnetic - radiation in a vacuum) and $\lambda$ is wavelength. So energy depends on frequency and wavelength. The velocity of electromagnetic radiation in a vacuum is constant ($c = 3\times10^{8}\ m/s$), and amplitude is related to the intensity, not the energy per photon.

Answer:

Wavelength, Frequency