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A two-slit pattern is viewed on a screen 1.50m from the slits.If the two third-order minima are 23.5cm apart, what is th...

A two-slit pattern is viewed on a screen 1.50m from the slits.If the two third-order minima are 23.5cm apart, what is the width of the central bright fringe?
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Answer #1

NOTE: FOR THIRD ORDER MINIMA N=2 (NOT 3)

because 1st order minima occurs at n=0

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please let me know if you need any further clarification

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