- #1
k3N70n
- 67
- 0
Homework Statement
A laser beam passes through a converging lens with a focal length of 19cm. At what distance past the lens has the laser beam's intensity increased by a factor of 6?
Homework Equations
[tex]I=\frac{c\epsilon_0 E_0^2}{2} [/tex]??
The Attempt at a Solution
To be honest, I'm not even sure how to start on this question. I think I just need a hint to get started. Any help would be greatly appreciated.