Which of the following are correct in regards to electromagnetic
radiation (light).
Select one or more:
a. The energy of a photon is directly proportional to it's
frequency
b. The product of wavelength and frequency is a constant
(c).
c. The energy of a photon is directly proportional to its
wavelength.
d. Wavelength and frequency are equal
e. Wavelength and frequency are inversely proportional.