Visible light of wavelength 550 nm falls on a single slit and produces its second diffraction minimum
Question:
Visible light of wavelength 550 nm falls on a single slit and produces its second diffraction minimum at an angle of 45.0° relative to the incident direction of the light.
(a) What is the width of the slit?
(b) At what angle is the first minimum produced?
Strategy
From the given information, and assuming the screen is far away from the slit, we can use the equation D sin θ = mλ first to find D, and again to find the angle for the first minimum θ1.
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