State the importance of coherent sources in the phenomenon of
interference.
In Young's double slit experiment to produce interference pattern;
obtain the conditions for constructive and destructive interference.
Hence deduce the expression for the fringe width.
How . does the fringe width get affected, if the entire experimental
apparatus of Young is immersed in water ?
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In Young's double slit experiment to produce interference pattern, obtain the conditions for constructive and destructive interference. ... If coherent sources are not taken, the phase difference between two interferingwaves, will change continuously and a sustained interference pattern will notbe obtained.
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