1. Mar 11, 2012

### channel1

1. The problem statement, all variables and given/known data
write pressure radiation for reflection in terms of force and area

2. Relevant equations
p=F/A

3. The attempt at a solution
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