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Diffraction is the spreading of light that takes place when it pass through a thin slit or small hole or passes by an obstacle
Answer:
Diffraction is the spreading of any kind of wave that take place upon passage of that wave by an obstacle or through a thin slit or small hole. Light is a type of wave so the statement is true.
Relativity principle: The principle, employed through Einstein's relativity theories, that the laws of physics are the similar, at least qualitatively, in all of frames. That
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