Two Extremely Flat Glass Plates,10

question 11

Multiple Choice

Two extremely flat glass plates,10.0 cm wide,touch at one end but are separated by a thin wire at the other end,forming a wedge.Light with a wavelength of 450 nm shines almost perpendicularly on the glass and forms fringes which are 1.80 mm apart.What is the diameter of the wire?

• A) 25.0 µm
• B) 17.5 µm
• C) 20.0 µm
• D) 12.5 µm
• E) 10.0 µm

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