A broad beam of light of wavelength 527 nm is sent directly downward through the glass plate (n = 1.46) in Figure (a). That plate and a plastic plate (n = 1.17) form a thin wedge of air that acts as a thin film. An observer looking down through the top plate sees the fringe pattern shown in Figure (b), with dark fringes centered on the ends. (a) What is the thickness (in m) of wedge at the right end? (b) How many dark fringes will the observer see if the air between the plates is replaced with a liquid with n = 1.26? Incident light (a)

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A broad beam of light of wavelength 527 nm is sent directly downward through the glass plate (n = 1.46) in Figure (a). That plate and a
plastic plate (n = 1.17) form a thin wedge of air that acts as a thin film. An observer looking down through the top plate sees the fringe
pattern shown in Figure (b), with dark fringes centered on the ends. (a) What is the thickness (in m) of wedge at the right end? (b) How
many dark fringes will the observer see if the air between the plates is replaced with a liquid with n = 1.26?
Incident light
(a) Number
(b) Number
i
Units
Units
(a)
(b)
Transcribed Image Text:A broad beam of light of wavelength 527 nm is sent directly downward through the glass plate (n = 1.46) in Figure (a). That plate and a plastic plate (n = 1.17) form a thin wedge of air that acts as a thin film. An observer looking down through the top plate sees the fringe pattern shown in Figure (b), with dark fringes centered on the ends. (a) What is the thickness (in m) of wedge at the right end? (b) How many dark fringes will the observer see if the air between the plates is replaced with a liquid with n = 1.26? Incident light (a) Number (b) Number i Units Units (a) (b)
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