Question

Blue light (λ = 450 nm) is used in a double slit experiment with the slits separated
by d = 2.10 × 10^-4 m. The distance between the third order bright fringe and the
central bright fringe is 1.93 × 10^-2 m.

(a) (3 pts.) Determine the distance between the double slit and the screen.

(b) (3 pts.) Calculate the width of the central bright fringe, i.e. the separation of
the two zeroth order dark fringes.

(c) (3 pts.) The minimum angular separation for which blue light may be resolved
by a certain camera is 4.50×10^-4 radians; calculate the diameter of the camera’s
lens.

Answer 1

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