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

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In a Young's double-slit experiment, yellow sodium light of wavelength 589 nm produces an interference pattern where the 3rd order bright fringe occurs at an angle of 0.850°. What is the slit spacing?

0.119 mm 0.238 mm 0.040 mm 0.357 mm

Correct Answer:

0.119 mm

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