A green laser beam of wavelength 540 nm passes through a pinhole and illuminates a dartboard 3.0
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A green laser beam of wavelength 540 nm passes through a pinhole and illuminates a dartboard 3.0 m past the pinhole. The first minimum in the intensity coincides with the ring surrounding the bull's-eye, 12 mm in diameter. What is the diameter of the pinhole?
A. 0.14 mm
B. 0.33 mm
C. 0.59 mm
D. 1.2 mm
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Related Book For
College Physics A Strategic Approach
ISBN: 9780321595492
2nd Edition
Authors: Randall D. Knight, Brian Jones, Stuart Field
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