Hi,

Here is the question and the answer was D.

The intensity of the radiation emitted by the oxygen sensor is directly proportional to the:

A.propagation speed of the radiation.
B.wavelength of the radiation.
C.polarization of photons emitted.
D.number of photons emitted.

I want to make sure my reasoning was correct for this:

-I eliminated answer B right away as I thought Intensity is inversely proportional to wavelength (and directly proportional to the frequency of the radiation, according to the equation E=hf. If we increase the number of photons emitted, we increase the frequency, increasing E.

Is there something I'm missing in my reasoning?

Thanks!