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Two beams of light will not give rise to an interference patern, if
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they are not monochromatic
Two beams of light give rise to an interference pattern if they are coherent, they have same wavelength/frequency in same phase or having a constant phase difference and same state of polarisation.
Interference pattern can not be obtained if the two beams are not mono chromatic.
Interference pattern can not be obtained if the two beams are not mono chromatic.
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