A broad source of light 1 680 nm illuminates normally two glass plates 120 mm long that touch at one end and are separated by a

Question

A broad source of light 1 680 nm illuminates normally two glass plates 120 mm long that touch at one end and are separated by a wire 0 034 mm in diameter at the other end The total number of bright fringes that appear over the 120 mm distance is A 50 B 100 incident light It 120 mm 0 034 mm C 200 D 400

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