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## Homework Statement

Two slits are separated by 0.320 mm. A beam of 500-nm light strikes the slits, producing an interference pattern. Determine the number of maxima observed in the angular range -30 degrees < theta < 30 degrees.

## Homework Equations

d*sin(theta) = m*(lambda)

## The Attempt at a Solution

(.32)sin(30)/.0005mm = m

m=320

so there are 320 maxima in 30 degrees. and thus 640 in this total range. is that right?