# Homework Help: Single slit interference

1. Mar 28, 2006

### jh24628

Consider the setup of a single slit experiment

The first minimum for 440 nm light is at y1.
The first minimum for 529 nm light is at y2.

what is the ratio of y2/y1?

i know that the distance between two max is
(wavelength*dis between the slit and the screen)/(dis slit seperation)

2. Mar 29, 2006

### jh24628

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3. Mar 29, 2006

### Staff: Mentor

Careful. For a single slit experiment, the position of the first minimum is given by:
$$y = \lambda \frac{D}{a}$$
where D = distance to screen; a = width of the slit