# Homework Help: Width of slit and distance between adjacent maxima

1. Aug 10, 2011

### fa08ti

A laser emitting light with a wavelength of 560 nm is directed at a single slit, producing an interference pattern on a screen that is 3.0 m away. The central maximum is 5.0 cm wide.

determine the width of the slit and the distance between adjacent maxima.

attempt

i used this equation:

$\lambda$ = w L / delta y

i got 6.7 X 10 ^-5 m for the width of the slit

what i'm unsure of is the distance of the adjacent maxima, i'm not even sure where to begin

2. Aug 11, 2011

### DiracRules

You should use the equation that links the intensity and the angle for a single slit.
It is easy to maximize if you know some of the basic properties of the sinc function.

Hope it helps!