A Double Slit Illuminated with Two Different Colors of Wavelengths

question 18

Multiple Choice

A double slit illuminated with two different colors of wavelengths 831 and 558 nm forms a two-colored diffraction pattern on a screen located 228 cm away.The slit separation is 36 wavelengths of 831 nm light.(a) What order maximum for λ = 831 nm occurs near x = 20.5 cm from zeroth order? (b) What order maximum for λ = 558 nm lies close to this order?

• A)(a)3 (b)5
• B)(a)6 (b)10
• C)(a)2 (b)2
• D)(a)5 (b)3

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