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A Fraunhofer Diffraction Pattern Is Produced from a Light Source

Question 42

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

Correct Answer:

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