In a Newton's rings apparatus, find the phase difference (in radians) when an air wedge of 500 nm thickness is illuminated with red light (λ = 640 nm).
A) 13
B) 11
C) 9
D) 7
E) 3

Name: In a Newton's rings apparatus, find the phase difference (in radians) when an air wedge of 500 nm thickness is illuminated with red light (λ = 640 nm). A) 13 B) 11 C) 9 D) 7 E) 3
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Quizplus · Accepted Answer

Phase difference = (2π/λ) * (2t) = (2π/640 nm) * (2 * 500 nm) = 13 radians

In a Newton's Rings Apparatus, Find the Phase Difference (In