Answer:
D. Frequency
Explanation:
Energy of photon is directly proportional to the frequency of the photon.
E = Energy carried by each photon
f = frequency of each photon
h = plank's constant = 6.63 x 10⁻³⁴ J-s
The formula for energy of photon can be given as
E α f
Adding the proportionality constant or plank's constant, we get
E = h f