- #1

ravsterphysics

- 57

- 1

## Homework Statement

## Homework Equations

## The Attempt at a Solution

For the first part I know the wavelength of light is (1.53 x 414nm) = 633nm

But for the second part I'm stumped. Since it's 180 degrees then the waves are in antiphase but I don't understand how to calculate the vertical distance?? (If antiphase then the path difference is (n+0.5)(lambda) )