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What happens to the interference pattern if the phase difference between the two sources varies continuously?(a) Brightens(b) No change(c) Disappears(d) Monochromatic patternI had been asked this question in exam.My question is taken from Wave Optics topic in division Wave Optics of Physics – Class 12

Answer»

Right option is (c) Disappears

Explanation: The positions of bright and DARK fringes will change rapidly. Such rapid changes cannot be detected by our eyes. Uniform ILLUMINATION is SEEN on the SCREEN i.e., the INTERFERENCE pattern disappears.



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