17 (b) Diffraction and interference experiments started to change scientists’ confidence in particle and wave models. The particle theory lost support and the wave theory gained support. Explain why. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] (c) Use the wave model to explain constructive and destructive interference. Diagrams may be used to help explain your answer.
................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] [Total: 5]
Š OCR 2014
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