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

question 16

Multiple Choice

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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