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Two spectral lines of sodium D(1) and D(...

Two spectral lines of sodium `D_(1) and D_(2)` have wavelengths `lambda_(1) = 5890 Å , `lambda_(2) = 5896 Å incident on a slit of width `2 micrometer`. A screen is located `2m` from the slit. Find the spacing between the first maxima of two sodium lines as measured on the screen.

A

`10^(-4)` m

B

`9 xx 10^(-4)` m

C

`9 xx 10^(4)` m

D

None

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