PLEASE SHOW WORKING OR GIVE AN EXPLANATION FOR YOUR ANSWER A light source produc

Question

PLEASE SHOW WORKING OR GIVE AN EXPLANATION FOR YOUR ANSWER A light source produces light at 550.0 nm with a linewidth of 6.0 nm. The light illuminates a double slit and produces an interference pattern on a screen. Assume that the intensity of the light is identical at each slit and that the slits have the same width. What is the value of the visibility V of the fringe pattern in the vicinity of the n = 10th order fringe. O less than 0.1. 0.1 or more but less than 0.5. 0.5 or more but less than 1. more than 1.

Explanation / Answer

visibility V = 2 sqrt(I1I2)/ I1+I2 Here the intensity is equal for all the lines hence visitbility V = 1 given n = 10 V = 1/10 = 0.1 hence the answer is B. Here the intensity is equal for all the lines hence visitbility V = 1 given n = 10 V = 1/10 = 0.1 hence the answer is B.

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