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Solve the following problem:
Problem: Coherent light that contains two wavelengths, 660nm and 470nm , passes through two narrow slits with a separation of 0.350mm and an interference pattern is observed on a screen which is a distance 4.30m from the slits.
A- What is the distance on the screen between the first-order bright fringe for each wavelength?
If possible just a brief explanation how you got the answer?
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