p36_015 - maxima is ∆ θ = /d Let be the wavelength...

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15. The angular positions of the maxima of a two-slit interference pattern are given by d sin θ = ,where d is the slit separation, λ is the wavelength, and m is an integer. If θ is small, sin θ may be approximated by θ in radians. Then, θ = mλ/d to good approximation. The angular separation of two adjacent
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Unformatted text preview: maxima is ∆ θ = λ/d . Let λ be the wavelength for which the angular separation is 10 . 0% greater. Then, 1 . 10 λ/d = λ /d or λ = 1 . 10 λ = 1 . 10(589 nm) = 648 nm....
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