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In a biprism experiment , the distance b...

In a biprism experiment , the distance between the coherent source is 0.5 mm and that between the slit and the eyepiece is 1.2 m, the slit is illuminated by red light of wavelength `6500 Å` . If the red light is repluced by a green light of movelength`6550 Å` , it is found that the nth red band coincides with (n+1)th green bright band. Calculate the distance of these from the central bright band.

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SL ARORA-WAVE OPTICS-Based on Intensity Distribution in interference pattern
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