For a demonstration, a professor uses a razor blade to cut athin slit in a piece of
Chapter 17, Problem 29(choose chapter or problem)
For a demonstration, a professor uses a razor blade to cut athin slit in a piece of aluminum foil. When she shines a laserpointer (A = 680 nm) through the slit onto a screen 5.5 m away,a diffraction pattern appears. The bright band in the center of thepattern is 8.0 cm wide. What is the width of the slit?
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