# Light waves in interference

## Homework Statement

Light of wavelength 500 nm illuminates a double slit, and the interference pattern is observed on the screen. At the position of the m = 2 bright fringe, how much farther is it to the farther slit than to the nearer slit?

## Homework Equations

$$\delta= r_{2}-r_{1}=dsin(\theta)$$
$$dsin(\theta_{bright})=m\lambda$$

## The Attempt at a Solution

Am I wrong in thinking that it is impossible to get a specific solution to this problem? Without being given the distance the slits are apart, d, or the theta angle the problem can only be solved generally, correct?