According to several sources, momentum of a photon is $\dfrac{h}{\lambda}$.
While doing some reading on radiation pressure. I came across this wikipedia page where it was stated that “pressure due to reflected and emitted photons is identical.”
Why is that? Shouldn’t reflected photons exert twice the pressure $2 \times \left( \dfrac{h}{\lambda A} \right)$, as compared to absorbed or emitted photons $1 \times \left( \dfrac{h}{\lambda A} \right)$ using simple conservation of momentum? Am I missing something here? Is the information on wikipedia correct?
From the same page, I found this helpful diagram contradicting the statement.
