A-LevelPhysicsSuperpositionFeb/Mar 2017Paper 1 Q291 Mark
In an experiment to demonstrate two-source interference of light, a beam of light is split into two beams using two slits 0.50 mm apart. These two beams are incident on a laboratory wall at a distance of 4.0 m. The wavelength of light is 550 nm. How far apart are two adjacent interference fringes that are formed on the laboratory wall?
A0.22 mm
B0.44 mm
C2.2 mm
D4.4 mm
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of superposition within the Physicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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