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 `- 30.0^(@) lt theta lt 30.0^(@)`.

Two slits are separated by 0.320 mm. A beam of 500 nm light strikes th

1.	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 `- 30.0^(@) lt theta lt 30.0^(@)`.
Answer» At `30.0^(@), d sin theta = m lambda` `(3.20 xx 10^(-4) m ) sin 30.0^(@) = m (500 xx 10^(-9) m)` So, `m = 320` There are 320 maxima ot the right, 320 to the left, and one for `m = 0` straight ahead. Therefore, there are 641 maxima.

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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 `- 30.0^(@) lt theta lt 30.0^(@)`.

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