What do you mean by diffraction and what is/are the proper condition/conditions for it?
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How can you save the sea from oil and sound polution?
What is amplitude?
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How many types of wave motions are there?
generaly what is physics!
How can it be proved that the window glass id colored ?
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Will a dc motor actually produce voltage if it is spun in reverse?
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what happens when an object travels in the speed of light hits another object?
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