A Fraunhofer Diffraction Pattern Is Produced from a Light Source

question 13

Multiple Choice

A Fraunhofer diffraction pattern is produced from a light source of wavelength 580 nm.The light goes through a single slit and onto a screen 1.0 m away.The first dark fringe is 5.0 mm from the central bright fringe.What is the slit width? (1 nm = 10^-9 m)

• A)0.24 mm
• B)0.12 mm
• C)0.10 mm
• D)0.081 mm

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