Physics: Light Refraction-Interference Problem?

A liquid of refractive index n = 4/3 replaces the air between a fixed wedge formed from two glass plates as shown. As a result, the spacing between adjacent dark bands in the interference pattern:A. increases by a factor of 4/3 B. increases by a factor of 3 C. remains the same D. decreases to 3/4 of its original... show more A liquid of refractive index n = 4/3 replaces the air between a fixed wedge formed from two glass
plates as shown. As a result, the spacing between adjacent dark bands in the interference pattern:A. increases by a factor of 4/3
B. increases by a factor of 3
C. remains the same
D. decreases to 3/4 of its original value
E. decreases to 1/3 of its original value
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