Quick question about pressure radiation for reflection

[channel1]

Homework Statement

write pressure radiation for reflection in terms of force and area

Homework Equations

p_radiation(reflection)=2I/c
p=F/A

The Attempt at a Solution

p_{radiationreflection}=2F/A

is that correct? (im fairly certain I've solved this correctly but i just wanted to check)

 

[issacnewton]

radiation pressure , in the case of reflection is $\frac{2I}{c}$, but the pressure is just force per unit area. so you should not have the factor of 2 in the second equation