CBSE 2025 · Region 7 · Set 1 · Q19 · 2 marks
Write two differences in the patterns of double-slit interference experiment and single-slit diffraction experiment. Light waves from two pinholes illuminated by two sodium lamps do not produce interference patterns. Explain why.
Marking-scheme solution
Difference between Interference & Diffraction patterns $\displaystyle 1$ Reason
Wave OpticsInterference of Light Waves and Young’s ExperimentUnderstandvery_short_answermedium
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CBSE Class 12 Physics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.