NCEA Level 3 Physics Practice Questions - New Zealand NCEA Level 3 Physics Examination Exam

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Monochromatic light of wavelength 520 nm illuminates two narrow slits separated by 0.200 mm. At what distance from the central maximum on a screen 1.80 m away does the 4th dark fringe occur?

16.38 mm 18.72 mm 14.04 mm 21.06 mm

Correct Answer:

16.38 mm

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