You create a wedge-shaped film of air between two flat plates of glass 2.5 cm wide by laying one on top of the other and placing a small slip of paper 1.0 mm thick between their edges at one end.You illuminate the glass plates with normally incident monochromatic light of unknown wavelength.Observing the reflection,you see dark fringes at both ends of the plates.Between the ends you see three other dark fringes.What is the wavelength of the incident light?
A)250 nm
B)400 nm
C)440 nm
D)500 nm
E)620 nm

Question

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The Answer of You create a wedge-shaped film of air between two flat plates of glass 2.5 cm wide by laying one on top of the other and placing a small slip of paper 1.0 mm thick between their edges at one end.You illuminate the glass plates with normally incident monochromatic light of unknown wavelength.Observing the reflection,you see dark fringes at both ends of the plates.Between the ends you see three other dark fringes.What is the wavelength of the incident light?
A)250 nm
B)400 nm
C)440 nm
D)500 nm
E)620 nm

You Create a Wedge-Shaped Film of Air Between Two Flat